Add step to disable Jekyll in documentation build

Right now going to the GH pages site just shows the README, this is likely because GH is only building the README with Jekyll even though this workflow should override it without the added lines.

Author: rclune

.github/workflows/documentation.yml

@@ -17,6 +17,8 @@ jobs:
       - name: Sphinx build
         run: |
           sphinx-build -M html docs/source/ docs/build/
+      - name: Disable Jekyll
+        run: touch docs/build/html/.nojekyll
       - name: Deploy to GitHub Pages
         uses: peaceiris/actions-gh-pages@v3
         if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/production' }}