Don't use monospacing in documentation headings

Closes gh-20875

spring-boot-project/spring-boot-docs/src/docs/asciidoc/appendix-auto-configuration-classes.adoc

@@ -10,7 +10,7 @@ Remember to also look at the conditions report in your application for more deta
 
 
 [[auto-configuration-classes-from-autoconfigure-module]]
-== `spring-boot-autoconfigure`
+== spring-boot-autoconfigure
 The following auto-configuration classes are from the `spring-boot-autoconfigure` module:
 
 include::auto-configuration-classes/spring-boot-autoconfigure.adoc[]
@@ -18,7 +18,7 @@ include::auto-configuration-classes/spring-boot-autoconfigure.adoc[]
 
 
 [[auto-configuration-classes-from-actuator]]
-== `spring-boot-actuator-autoconfigure`
+== spring-boot-actuator-autoconfigure
 The following auto-configuration classes are from the `spring-boot-actuator-autoconfigure` module:
 
 include::auto-configuration-classes/spring-boot-actuator-autoconfigure.adoc[]

spring-boot-project/spring-boot-docs/src/docs/asciidoc/appendix-executable-jar-format.adoc

@@ -231,7 +231,7 @@ The classpath is deduced from the nested jars.
 
 
 [[executable-jar-property-launcher-features]]
-== `PropertiesLauncher` Features
+== PropertiesLauncher Features
 `PropertiesLauncher` has a few special features that can be enabled with external properties (System properties, environment variables, manifest entries, or `loader.properties`).
 The following table describes these properties:
 

spring-boot-project/spring-boot-docs/src/docs/asciidoc/build-tool-plugins.adoc

@@ -68,7 +68,7 @@ Once the `spring-boot-antlib` namespace has been declared, the following additio
 
 
 [[spring-boot-ant-exejar]]
-==== `spring-boot:exejar`
+==== Using the "`exejar`" Task
 You can use the `exejar` task to create a Spring Boot executable jar.
 The following attributes are supported by the task:
 
@@ -136,7 +136,7 @@ This section shows two examples of Ant tasks.
 
 
 [[spring-boot-ant-findmainclass]]
-=== `spring-boot:findmainclass`
+=== Using the "`findmainclass`" Task
 The `findmainclass` task is used internally by `exejar` to locate a class declaring a `main`.
 If necessary, you can also use this task directly in your build.
 The following attributes are supported:

spring-boot-project/spring-boot-docs/src/docs/asciidoc/deployment.adoc

@@ -505,7 +505,7 @@ Spring Boot application can be easily started as Unix/Linux services by using ei
 
 
 [[deployment-initd-service]]
-==== Installation as an `init.d` Service (System V)
+==== Installation as an init.d Service (System V)
 If you configured Spring Boot's Maven or Gradle plugin to generate a <<deployment-install, fully executable jar>>, and you do not use a custom `embeddedLaunchScript`, your application can be used as an `init.d` service.
 To do so, symlink the jar to `init.d` to support the standard `start`, `stop`, `restart`, and `status` commands.
 
@@ -543,7 +543,7 @@ For example, on Debian, you could use the following command:
 
 
 [[deployment-initd-service-securing]]
-===== Securing an `init.d` Service
+===== Securing an init.d Service
 NOTE: The following is a set of guidelines on how to secure a Spring Boot application that runs as an init.d service.
 It is not intended to be an exhaustive list of everything that should be done to harden an application and the environment in which it runs.
 
@@ -594,7 +594,7 @@ Use `chmod` so that the file can only be read by the owner and use `chown` to ma
 
 
 [[deployment-systemd-service]]
-==== Installation as a `systemd` Service
+==== Installation as a systemd Service
 `systemd` is the successor of the System V init system and is now being used by many modern Linux distributions.
 Although you can continue to use `init.d` scripts with `systemd`, it is also possible to launch Spring Boot applications by using `systemd` '`service`' scripts.
 

spring-boot-project/spring-boot-docs/src/docs/asciidoc/howto.adoc

@@ -218,7 +218,7 @@ To use Spring property placeholders together with automatic expansion, escape th
 
 
 [[howto-externalize-configuration]]
-=== Externalize the Configuration of `SpringApplication`
+=== Externalize the Configuration of SpringApplication
 A `SpringApplication` has bean properties (mainly setters), so you can use its Java API as you create the application to modify its behavior.
 Alternatively, you can externalize the configuration by setting properties in `+spring.main.*+`.
 For example, in `application.properties`, you might have the following settings:
@@ -1831,7 +1831,7 @@ If you use Spring Data, you need to configure `@EnableJpaRepositories` according
 
 
 [[howto-use-traditional-persistence-xml]]
-=== Use a Traditional `persistence.xml` File
+=== Use a Traditional persistence.xml File
 Spring Boot will not search for or use a `META-INF/persistence.xml` by default.
 If you prefer to use a traditional `persistence.xml`, you need to define your own `@Bean` of type `LocalEntityManagerFactoryBean` (with an ID of '`entityManagerFactory`') and set the persistence unit name there.
 
@@ -2611,7 +2611,7 @@ See {spring-boot-maven-plugin-docs}#run-example-debug[this example] for more det
 
 
 [[howto-build-an-executable-archive-with-ant]]
-=== Build an Executable Archive from Ant without Using `spring-boot-antlib`
+=== Build an Executable Archive from Ant without Using spring-boot-antlib
 To build with Ant, you need to grab dependencies, compile, and then create a jar or war archive.
 To make it executable, you can either use the `spring-boot-antlib` module or you can follow these instructions:
 

spring-boot-project/spring-boot-docs/src/docs/asciidoc/spring-boot-cli.adoc

@@ -408,7 +408,7 @@ You can mix class declarations with `beans{}` in the same file as long as they s
 
 
 [[cli-maven-settings]]
-== Configuring the CLI with `settings.xml`
+== Configuring the CLI with settings.xml
 The Spring Boot CLI uses Aether, Maven's dependency resolution engine, to resolve dependencies.
 The CLI makes use of the Maven configuration found in `~/.m2/settings.xml` to configure Aether.
 The following configuration settings are honored by the CLI:

spring-boot-project/spring-boot-docs/src/docs/asciidoc/spring-boot-features.adoc

@@ -1024,7 +1024,7 @@ TIP: If you have more than one constructor for your class you can also use `@Con
 
 
 [[boot-features-external-config-enabling]]
-==== Enabling `@ConfigurationProperties`-annotated types
+==== Enabling @ConfigurationProperties-annotated types
 Spring Boot provides infrastructure to bind `@ConfigurationProperties` types and register them as beans.
 You can either enable configuration properties on a class-by-class basis or enable configuration property scanning that works in a similar manner to component scanning.
 
@@ -1068,7 +1068,7 @@ If you still want to inject other beans using the constructor, the configuration
 
 
 [[boot-features-external-config-using]]
-==== Using `@ConfigurationProperties`-annotated types
+==== Using @ConfigurationProperties-annotated types
 This style of configuration works particularly well with the `SpringApplication` external YAML configuration, as shown in the following example:
 
 [source,yaml,indent=0]
@@ -3133,8 +3133,9 @@ Spring Boot will auto-configure the Spring Messaging infrastructure for RSocket.
 This means that Spring Boot will create a `RSocketMessageHandler` bean that will handle RSocket requests to your application.
 
 
+
 [[boot-features-rsocket-requester]]
-=== Calling RSocket Services with `RSocketRequester`
+=== Calling RSocket Services with RSocketRequester
 Once the `RSocket` channel is established between server and client, any party can send or receive requests to the other.
 
 As a server, you can get injected with an `RSocketRequester` instance on any handler method of an RSocket `@Controller`.
@@ -5645,7 +5646,7 @@ spring.kafka.bootstrap-servers=${spring.embedded.kafka.brokers}
 
 
 [[boot-features-resttemplate]]
-== Calling REST Services with `RestTemplate`
+== Calling REST Services with RestTemplate
 If you need to call remote REST services from your application, you can use the Spring Framework's {spring-framework-api}/web/client/RestTemplate.html[`RestTemplate`] class.
 Since `RestTemplate` instances often need to be customized before being used, Spring Boot does not provide any single auto-configured `RestTemplate` bean.
 It does, however, auto-configure a `RestTemplateBuilder`, which can be used to create `RestTemplate` instances when needed.
@@ -5699,7 +5700,7 @@ Doing so switches off the auto-configuration of a `RestTemplateBuilder` and prev
 
 
 [[boot-features-webclient]]
-== Calling REST Services with `WebClient`
+== Calling REST Services with WebClient
 If you have Spring WebFlux on your classpath, you can also choose to use `WebClient` to call remote REST services.
 Compared to `RestTemplate`, this client has a more functional feel and is fully reactive.
 You can learn more about the `WebClient` in the dedicated {spring-framework-docs}web-reactive.html#webflux-client[section in the Spring Framework docs].
@@ -7414,7 +7415,7 @@ To do so, configure their location, as shown in the following example:
 
 
 [[boot-features-webservices-template]]
-=== Calling Web Services with `WebServiceTemplate`
+=== Calling Web Services with WebServiceTemplate
 If you need to call remote Web services from your application, you can use the {spring-webservices-docs}#client-web-service-template[`WebServiceTemplate`] class.
 Since `WebServiceTemplate` instances often need to be customized before being used, Spring Boot does not provide any single auto-configured `WebServiceTemplate` bean.
 It does, however, auto-configure a `WebServiceTemplateBuilder`, which can be used to create `WebServiceTemplate` instances when needed.
@@ -7751,7 +7752,7 @@ Using your own starter in a compatible IDE is also a good idea to validate that
 
 
 [[boot-features-custom-starter-module-autoconfigure]]
-==== `autoconfigure` Module
+==== The "`autoconfigure`" Module
 The `autoconfigure` module contains everything that is necessary to get started with the library.
 It may also contain configuration key definitions (such as `@ConfigurationProperties`) and any callback interface that can be used to further customize how the components are initialized.
 
@@ -7915,7 +7916,7 @@ TIP: `org.jetbrains.kotlinx:kotlinx-coroutines-reactor` dependency is provided b
 
 
 [[boot-features-kotlin-configuration-properties]]
-=== `@ConfigurationProperties`
+=== @ConfigurationProperties
 `@ConfigurationProperties` when used in combination with <<boot-features-external-config-constructor-binding,`@ConstructorBinding`>> supports classes with immutable `val` properties as shown in the following example:
 
 [source,kotlin,indent=0]