MULTI-REPO_COMMIT: Move all extension reference guides to their desig…

…nated page and rename README.adoc to index.adoc for friendlier URLS.

Many small changes based on build output have also been done over many repositories. Some parts needed escaping, didn't have proper syntax, or headers that should really be tabs.

docs/axoniq-console-guide/modules/ROOT/pages/monitoring/add-axon-firestarter.adoc

@@ -17,21 +17,21 @@ NOTE: If you are using the Docker-based bike-rental demo that comes with AxonIQ
 The first thing we need to do is to declare the dependency management in the `pom.xml` of the root project:
 
 ./pom.xml
-[sources,xml]
+[source,xml]
 ----
 include::example$root/pom.xml[tags=dependencyManagement;deps-axon-firestarter;!*]
 ----
 
 With this configuration, we can now add the dependency to any module in our project without specifying the version while keeping the versions in sync. So all you need to do is declare the dependency in your `payment' and `rental' modules:
 
 ./payment/pom.xml
-[sources,xml]
+[source,xml]
 ----
 include::example$payment/pom.xml[tags=dependencies;deps-axon-firestarter;!*]
 ----
 
 ./rental/pom.xml
-[sources,xml]
+[source,xml]
 ----
 include::example$rental/pom.xml[tags=dependencies;deps-axon-firestarter;!*]
 ----

docs/axoniq-console-guide/modules/ROOT/pages/monitoring/your-app-in-axoniq-console.adoc

@@ -133,7 +133,7 @@ The Processors tab collects information about the event processors defined in yo
 ====
 Event Processors are the components in an Axon Framework application that perform the tasks necessary to handle an event (for example, launching a transaction if required) and call the event handler that defines the business logic associated with receiving the event.
 
-You can learn more about xref:axon-framework-reference:events:event-processors/README.adoc[Event Processors in Axon Framework Applications] in the dedicated section of the Axon Framework Reference Guide.
+You can learn more about xref:axon-framework-reference:events:event-processors/index.adoc[Event Processors in Axon Framework Applications] in the dedicated section of the Axon Framework Reference Guide.
 ====
 
 In the case of our application, we can see the three event processors that we have defined in our bike-rental application:

docs/tutorial/modules/ROOT/pages/run-app-with-docker-compose.adoc

@@ -24,7 +24,7 @@ Even if we are going to run only one docker image (Axon Server), Docker Compose
 
 We will start by creating the Docker Compose configuration file. Create a `compose.yaml` file in the `root` project with the following contents:
 
-[sources,yaml]
+[source,yaml]
 .compose.yaml
 ----
 include::example$root/compose.yaml[]