Update close-on-merge.yml

.github/workflows/close-on-merge.yml

@@ -15,16 +15,23 @@ jobs:
     - name: Close linked issues
       if: github.event.pull_request.merged == true
       run: |
+        # Extract issue numbers from the PR body
         ISSUES=$(jq -r '.pull_request.body' "$GITHUB_EVENT_PATH" | grep -Eo '#[0-9]+' | tr -d '#')
+        
+        # Loop through each extracted issue number and close the issue
         for ISSUE in $ISSUES
         do
           echo "Closing issue #$ISSUE"
+
+          # Post a comment to the issue indicating it was closed by the merged PR
           curl -X POST -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
                -H "Accept: application/vnd.github.v3+json" \
                https://api.github.com/repos/${{ github.repository }}/issues/$ISSUE/comments \
-               -d '{"body":"Closed by PR #${{ github.event.pull_request.number }}"}'
+               -d "{\"body\":\"Closed by PR #${{ github.event.pull_request.number }}\"}"
+
+          # Close the issue by updating its state to "closed"
           curl -X PATCH -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
                -H "Accept: application/vnd.github.v3+json" \
                https://api.github.com/repos/${{ github.repository }}/issues/$ISSUE \
-               -d '{"state":"closed"}'
-        done
+               -d "{\"state\":\"closed\"}"
+        done