edit commit message in GH Action

Author: marvinschmitt

.github/workflows/generate_readme_from_bib.yml

@@ -37,5 +37,5 @@ jobs:
           git config --global user.name 'github-actions[bot]'
           git config --global user.email 'github-actions[bot]@users.noreply.github.com'
           git add README.md
-          git diff-index --quiet HEAD || git commit -m "Update README.md"
+          git diff-index --quiet HEAD || git commit -m "Update README.md [GH Action]"
           git push