Update jekyll-gh-pages.yml

Author: aleff-github

.github/workflows/jekyll-gh-pages.yml

@@ -36,6 +36,8 @@ jobs:
         with:
           source: ./
           destination: ./_site
+      - name: Debug build output
+        run: ls -la ./_site
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3