Unify guide titles and update pinned-guides (#10007)

docs/guides/src/main/server/caching.adoc

@@ -3,7 +3,7 @@
 <#import "/templates/options.adoc" as opts>
 
 <@tmpl.guide
-title="Configure distributed caches"
+title="Configuring distributed caches"
 summary="Understand how to configure the caching layer"
 includedOptions="cache cache-*">
 

docs/guides/src/main/server/hostname.adoc

@@ -3,7 +3,7 @@
 <#import "/templates/links.adoc" as links>
 
 <@tmpl.guide
-title="Configure the Hostname"
+title="Configuring the hostname"
 summary="Learn how to configure the frontend and backchannel endpoints exposed by Keycloak."
 includedOptions="hostname-* proxy">
 

docs/guides/src/main/server/outgoinghttp.adoc

@@ -2,7 +2,7 @@
 <#import "/templates/kc.adoc" as kc>
 
 <@tmpl.guide
-title="Configure outgoing HTTP requests"
+title="Configuring outgoing HTTP requests"
 summary="How to configure the client used for outgoing HTTP requests."
 includedOptions="">
 

docs/guides/src/main/server/pinned-guides

@@ -1,3 +1,5 @@
-containers
+configuration
+configuration-production
 all-config
-features
+features
+containers

docs/guides/src/main/server/reverseproxy.adoc

@@ -3,7 +3,7 @@
 <#import "/templates/options.adoc" as opts>
 
 <@tmpl.guide
-title="Configuring a reverse proxy"
+title="Using a reverse proxy"
 summary="Learn how to configure Keycloak together with a reverse proxy, api gateway, or load balancer."
 includedOptions="proxy proxy-*">
 

docs/guides/src/main/server/vault.adoc

@@ -2,7 +2,7 @@
 <#import "/templates/kc.adoc" as kc>
 
 <@tmpl.guide
-title="Using Kubernetes Secrets"
+title="Using Kubernetes secrets"
 summary="Learn how to use Kubernetes/OpenShift secrets in Keycloak"
 priority=30
 includedOptions="vault vault-*">