UseApprovedVerbs.md: Improving Documentation (#1294)

* Update UseApprovedVerbs.md

I have come to this documentation a few times in the past. Get-Verb is very helpful, but the additional insight, and examples of unapproved verbs in the Microsoft docs are very helpful and make it easier to decide on a suitable replacement for an unapproved verb. I think it would be helpful to have a link to that documentation here.

* Removed en-us from link

* Clarified text. Broke paragraph into semantic lines.

RuleDocumentation/UseApprovedVerbs.md

@@ -8,6 +8,12 @@ All CMDLets must used approved verbs.
 
 Approved verbs can be found by running the command `Get-Verb`.
 
+Additional documentation on approved verbs can be found in the microsoft docs page
+[Approved Verbs for PowerShell Commands](https://docs.microsoft.com/powershell/developer/cmdlet/approved-verbs-for-windows-powershell-commands).
+Some unapproved verbs are documented on the approved verbs page and point to approved alternatives;
+try searching for the verb you used to find its approved form.
+For example, searching for `Read`, `Open`, or `Search` will lead you to `Get`.
+
 ## How
 
 Change the verb in the cmdlet's name to an approved verb.