Prepare A/P SYNC concepts for Keycloak customers

Closes #587

Signed-off-by: Alexander Schwartz <aschwart@redhat.com>

doc/kubernetes/modules/ROOT/nav.adoc

@@ -16,12 +16,15 @@
 ** xref:openshift/installation-infinispan.adoc[]
 ** xref:openshift/cross-site-rosa.adoc[]
 * xref:running/index.adoc[]
-** xref:running/keycloak-deployment.adoc[]
-** xref:running/keycloak-with-external-infinispan.adoc[]
-** xref:running/infinispan-deployment.adoc[]
-** xref:running/infinispan-crossdc-deployment.adoc[]
-** xref:running/aurora-multi-az.adoc[]
-** xref:running/aurora-peering-connections.adoc[]
+** xref:running/index.adoc#overview[Overviews]
+*** xref:running/deployments/active-passive-sync.adoc[]
+** xref:running/index.adoc#building-blocks[Building Blocks]
+*** xref:running/keycloak-deployment.adoc[]
+*** xref:running/keycloak-with-external-infinispan.adoc[]
+*** xref:running/infinispan-deployment.adoc[]
+*** xref:running/infinispan-crossdc-deployment.adoc[]
+*** xref:running/aurora-multi-az.adoc[]
+*** xref:running/aurora-peering-connections.adoc[]
 ** xref:running/concepts/index.adoc[]
 *** xref:running/concepts/database-connections.adoc[]
 *** xref:running/concepts/threads.adoc[]

doc/kubernetes/modules/ROOT/pages/running/aurora-multi-az.adoc

@@ -52,7 +52,7 @@ endpoint. To do this we create a `Keycloak` CR outlined in the xref:running/keyc
 we modify the following elements:
 
 
-. Update `spec.db.url` to be `jdbc:postgresql://$HOST$:5432/keycloak` where `$HOST` is the
+. Update `spec.db.url` to be `jdbc:postgresql://$HOST:5432/keycloak` where `$HOST` is the
 <<aurora-writer-url, Aurora writer endpoint URL>>.
 
 . Ensure that the Secrets referenced by `spec.db.usernameSecret` and `spec.db.passwordSecret` contain usernames and