Migrate to Asciidoctor Tabs

framework-docs/modules/ROOT/pages/languages/kotlin/bean-definition-dsl.adoc

@@ -38,12 +38,10 @@ you can instead write the following:
 		registerBean { Bar(it.getBean()) }
 	}
 ----
-====
 
 When the class `Bar` has a single constructor, you can even just specify the bean class,
 the constructor parameters will be autowired by type:
 
-====
 [source,kotlin,indent=0]
 ----
 	val context = GenericApplicationContext().apply {

framework-docs/modules/ROOT/pages/languages/kotlin/spring-projects-in.adoc

@@ -256,7 +256,6 @@ in order to use `val` instead of `lateinit var`. You can use
 {api-spring-framework}/test/context/TestConstructor.html[`@TestConstructor(autowireMode = AutowireMode.ALL)`]
 to enable autowiring for all parameters.
 
-====
 [source,kotlin,indent=0]
 ----
 @SpringJUnitConfig(TestConfig::class)
@@ -267,7 +266,6 @@ class OrderServiceIntegrationTests(val orderService: OrderService,
     // tests that use the injected OrderService and CustomerService
 }
 ----
-====
 
 
 [[per_class-lifecycle]]