Apply suggestions from code review

Author: felicitymay

.github/workflows/stale.yml

@@ -20,10 +20,10 @@ jobs:
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           stale-issue-message: 'This issue is stale because there have been no updates in 365 days.'
-          stale-pr-message: 'This PR has been automatically marked as stale due to 14 days of inactivity. Please update soon to avoid closure.'
-          close-pr-message: 'Closing this PR due to prolonged inactivity. If you wish to continue, please reopen.'
+          stale-pr-message: 'This PR has been automatically marked as stalled after 14 days of inactivity (open PRs rapidly collect merge conflicts). Please update soon to avoid closure.'
+          close-pr-message: 'Closing this PR because it's been inactive for 3 weeks. If the PR is still relevant, please reopen and resolve any merge conflicts.'
           days-before-stale: 365
-          days-before-close: 0
+          days-before-issue-close: 0
           days-before-stale-pr: 14
           stale-issue-label: 'stale'
           stale-pr-label: 'stale'