include prs with stalebnot (#3658)

* include prs with stalebnot

* fix wording

Author: GregTheGreek

.github/workflows/stale.yml

@@ -10,7 +10,8 @@ jobs:
     - uses: actions/stale@v3
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
-        stale-issue-message: 'This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 7 days if no further activity occurs. Thank you for your contributions'
+        stale-issue-message: 'This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 7 days if no further activity occurs. Thank you for your contributions. If you believe this was a mistake, please comment.'
+        stale-pr-message: 'This PR has been automatically marked as stale beacause it has not had recent activity. It will be closed in 7 days if no further activity occurs. Thank you for your contributions. If you believe this was a mistake, please comment.'
         days-before-stale: 30
         days-before-close: 7
         operations-per-run: 100