Minor typo corrections in Distribution Request Issue Templates (Power…

…Shell#12744)

Fix a few misspellings in the Issue Template.

.github/ISSUE_TEMPLATE/Distribution_Request.md

@@ -1,6 +1,6 @@
 ---
 name: Distribution Support Request
-about: Requests suppoort for a new distribution
+about: Requests support for a new distribution
 title: "Distribution Support Request"
 labels: Distribution-Request
 assignees: ''
@@ -22,7 +22,7 @@ assignees: ''
   - [ ] The version and architecture of the Distribution is [supported by .NET Core](https://github.com/dotnet/core/blob/master/release-notes/3.0/3.0-supported-os.md#linux).
 - The following are requirements for supporting a distribution.
   Please write a justification for any exception where these criteria are not met and 
-  the PowerShell comittee will review the request.
+  the PowerShell committee will review the request.
   - [ ] The version of the Distribution is supported for at least one year.
   - [ ] The version of the Distribution is not an [interim release](https://ubuntu.com/about/release-cycle) or equivalent.