Update usage for OpenShift CLI

Author: jboxman

contributing_to_docs/term_glossary.adoc

@@ -285,10 +285,16 @@ allowed for use across all distribution documentation:
 ''''
 === OpenShift CLI
 
-Usage: OpenShift CLI
+Usage: OpenShift CLI (`oc`)
 
 The `oc` tool is the command line interface of OpenShift 3 and 4.
 
+When referencing as a prerequisite for a procedure module, use the following
+construction: Install the OpenShift Command-line Interface (CLI), commonly known
+as `oc`.
+
+When referencing in overview text, use: OpenShift CLI (`oc`).
+
 ''''
 === OpenShift master