Fix code example callouts in reference manual

framework-docs/src/docs/asciidoc/data-access.adoc

@@ -3480,6 +3480,7 @@ configure a `DataSource` in your Spring configuration file and then dependency-i
 that shared `DataSource` bean into your DAO classes. The `JdbcTemplate` is created in
 the setter for the `DataSource`. This leads to DAOs that resemble the following:
 
+--
 [source,java,indent=0,subs="verbatim,quotes",role="primary"]
 .Java
 ----
@@ -3504,6 +3505,7 @@ the setter for the `DataSource`. This leads to DAOs that resemble the following:
 		// JDBC-backed implementations of the methods on the CorporateEventDao follow...
 	}
 ----
+--
 
 The following example shows the corresponding XML configuration:
 
@@ -3540,6 +3542,7 @@ support for dependency injection. In this case, you can annotate the class with
 (which makes it a candidate for component-scanning) and annotate the `DataSource` setter
 method with `@Autowired`. The following example shows how to do so:
 
+--
 [source,java,indent=0,subs="verbatim,quotes",role="primary"]
 .Java
 ----
@@ -3574,6 +3577,7 @@ method with `@Autowired`. The following example shows how to do so:
 <1> Annotate the class with `@Repository`.
 <2> Constructor injection of the `DataSource`.
 <3> Create a new `JdbcTemplate` with the `DataSource`.
+--
 
 
 The following example shows the corresponding XML configuration:
@@ -7077,6 +7081,7 @@ in your Spring configuration file and then dependency-inject
 that shared `ConnectionFactory` bean into your DAO classes. The `DatabaseClient` is created in
 the setter for the `ConnectionFactory`. This leads to DAOs that resemble the following:
 
+--
 [source,java,indent=0,subs="verbatim,quotes",role="primary"]
 .Java
 ----
@@ -7101,12 +7106,14 @@ the setter for the `ConnectionFactory`. This leads to DAOs that resemble the fol
 		// R2DBC-backed implementations of the methods on the CorporateEventDao follow...
 	}
 ----
+--
 
 An alternative to explicit configuration is to use component-scanning and annotation
 support for dependency injection. In this case, you can annotate the class with `@Component`
 (which makes it a candidate for component-scanning) and annotate the `ConnectionFactory` setter
 method with `@Autowired`. The following example shows how to do so:
 
+--
 [source,java,indent=0,subs="verbatim,quotes",role="primary"]
 .Java
 ----
@@ -7141,6 +7148,7 @@ method with `@Autowired`. The following example shows how to do so:
 <1> Annotate the class with `@Component`.
 <2> Constructor injection of the `ConnectionFactory`.
 <3> Create a new `DatabaseClient` with the `ConnectionFactory`.
+--
 
 Regardless of which of the above template initialization styles you choose to use (or
 not), it is seldom necessary to create a new instance of a `DatabaseClient` class each