Use TYPE instead of RESOURCE in help string

For commands in kubectl, use TYPE in help string.

docs/man/man1/kubectl-describe.1

@@ -20,10 +20,10 @@ This command joins many API calls together to form a detailed description of a
 given resource or group of resources.
 
 .PP
-$ kubectl describe RESOURCE NAME\_PREFIX
+$ kubectl describe TYPE NAME\_PREFIX
 
 .PP
-will first check for an exact match on RESOURCE and NAME\_PREFIX. If no such resource
+will first check for an exact match on TYPE and NAME\_PREFIX. If no such resource
 exists, it will output details for every resource that has a name prefixed with NAME\_PREFIX
 
 .PP