Set alias for *OnPremise* to *OnPremises*

Author: Timothy Wamalwa (from Dev Box)

src/readme.graph.md

@@ -911,5 +911,10 @@ directive:
       subject: ^User$
     set:
       alias: Set-Mg${subject-prefix}${subject}
+  - where:
+      verb: (Get|New|Update|Remove|Set|Invoke|Create)
+      subject: "*OnPremise*"
+    set:
+      alias: "*OnPremises*"
 
 ```