Fix indentation for all pages

docs/modules/ROOT/pages/functional.adoc

@@ -1,7 +1,7 @@
 Spring Cloud Function supports a "functional" style of bean declarations for small apps where you need fast startup. The functional style of bean declaration was a feature of Spring Framework 5.0 with significant enhancements in 5.1.
 
 [[comparing-functional-with-traditional-bean-definitions]]
-== Comparing Functional with Traditional Bean Definitions
+= Comparing Functional with Traditional Bean Definitions
 
 Here's a vanilla Spring Cloud Function application from with the
 familiar `@Configuration` and `@Bean` declaration style:
@@ -115,7 +115,7 @@ public void initialize(GenericApplicationContext context) {
 ----
 
 [[limitations-of-functional-bean-declaration]]
-== Limitations of Functional Bean Declaration
+= Limitations of Functional Bean Declaration
 
 Most Spring Cloud Function apps have a relatively small scope compared to the whole of Spring Boot,
 so we are able to adapt it to these functional bean definitions easily. If you step outside that limited scope,
@@ -131,7 +131,7 @@ functional mode" using `spring.functional.enabled=false` so that Spring Boot can
 Spring Cloud Function supports visualization of functions available in `FunctionCatalog` through Actuator endpoints as well as programmatic way.
 
 [[programmatic-way]]
-==== Programmatic way
+=== Programmatic way
 
 To see function available within your application context programmatically all you need is access to `FunctionCatalog`. There you can 
 finds methods to get the size of the catalog, lookup functions as well as list the names of all the available functions. 
@@ -147,7 +147,7 @@ Set<String> names = functionCatalog.getNames(null); will list the names of all t
 ----
 
 [[actuator]]
-==== Actuator
+=== Actuator
 Since actuator and web are optional, you must first add one of the web dependencies as well as add the actuator dependency manually.
 The following example shows how to add the dependency for the Web framework: