OSDOCS-4086: Updating CLI docs for 4.12

Author: bergerhoffer

modules/oc-by-example-content.adoc

@@ -59,7 +59,7 @@ Print the supported API resources on the server
   oc api-resources --namespaced=false
   
   # Print the supported API resources with a specific APIGroup
-  oc api-resources --api-group=extensions
+  oc api-resources --api-group=rbac.authorization.k8s.io
 ----
 
 
@@ -290,7 +290,7 @@ Dump relevant information for debugging and diagnosis
 
 
 == oc completion
-Output shell completion code for the specified shell (bash, zsh or fish)
+Output shell completion code for the specified shell (bash, zsh, fish, or powershell)
 
 .Example usage
 [source,bash,options="nowrap"]
@@ -675,7 +675,7 @@ Create a cluster role
   oc create clusterrole pod-reader --verb=get --resource=pods --resource-name=readablepod --resource-name=anotherpod
   
   # Create a cluster role named "foo" with API Group specified
-  oc create clusterrole foo --verb=get,list,watch --resource=rs.extensions
+  oc create clusterrole foo --verb=get,list,watch --resource=rs.apps
   
   # Create a cluster role named "foo" with SubResource specified
   oc create clusterrole foo --verb=get,list,watch --resource=pods,pods/status
@@ -947,7 +947,7 @@ Create a role with single rule
   oc create role pod-reader --verb=get --resource=pods --resource-name=readablepod --resource-name=anotherpod
   
   # Create a role named "foo" with API Group specified
-  oc create role foo --verb=get,list,watch --resource=rs.extensions
+  oc create role foo --verb=get,list,watch --resource=rs.apps
   
   # Create a role named "foo" with SubResource specified
   oc create role foo --verb=get,list,watch --resource=pods,pods/status
@@ -1230,7 +1230,7 @@ Delete resources by file names, stdin, resources and names, or by resources and
   oc delete -k dir
   
   # Delete resources from all files that end with '.json' - i.e. expand wildcard characters in file names
-  oc apply -f '*.json'
+  oc delete -f '*.json'
   
   # Delete a pod based on the type and name in the JSON passed into stdin
   cat pod.json | oc delete -f -