Update PULL_REQUEST_TEMPLATE.md - fix outdated URL

Author: tdykstra

PULL_REQUEST_TEMPLATE.md

@@ -1,5 +1,5 @@
 Before requesting or performing a merge in upstream:
 
 - [ ] Verify that your pull request is following our PR quality criteria (items that apply to All and Learn):
-       https://review.learn.microsoft.com/help/contribute/contribute-how-to-write-pull-request-quality-criteria?branch=main
+       https://learn.microsoft.com/help/contribute/contribute-how-to-write-pull-request-quality-criteria?branch=main
 - [ ] Verify your PR has a useful title that reflects what it is for.