RHIDP-5421 - Document which plugins in RHDH have metrics

Author: Gerry-Forde

artifacts/rhdh-plugins-reference/keycloak/keycloak-plugin-admin.adoc

@@ -164,7 +164,6 @@ All counters include the `taskInstanceId` label, which uniquely identifies each
 
 Users can enter queries in the Prometheus UI or Grafana to explore and manipulate metric data. 
 
-.Examples 
 In the following examples, a Prometheus Query Language (PromQL) expression returns the number of backend failures.
 
 .Example to get the number of backend failures associated with a `taskInstanceId`