Adds workflow for automatic comment requesting feedback on contributor experience (#58152)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.github/workflows/docs-feedback-comment.yaml

@@ -0,0 +1,24 @@
+name: Automatic comment to request feedback on PR experience
+
+# What it does: When PRs are merged, generate an automatic comment asking for feedback.
+# Why we have it: So Hubbers can leave us feedback on the DIY Docs experience.
+# Who it impacts: All Hubbers
+
+on:
+  pull_request:
+    types:
+      - closed
+
+jobs:
+  add-comment:
+    if: github.repository == 'github/docs-internal' && github.event.pull_request.merged == true
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - name: Comment on the PR
+        run: |
+          gh pr comment ${{ github.event.pull_request.number }} --body "Please leave feedback on the contributor experience! Leave a 👍 or 👎. You can also reach us in `#docs-contributor-feedback` on Slack."
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}