fixing docs workflow

Author: Marius Isken

.github/workflows/documentation.yml

@@ -22,8 +22,8 @@ jobs:
           sphinx-build doc/source _build
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3
-        # Or?: if: "startsWith(github.ref, 'refs/tags/')"
-        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
+        if: "startsWith(github.ref, 'refs/tags/')"
+        # if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
         with:
           publish_branch: gh-pages
           github_token: ${{ secrets.GITHUB_TOKEN }}