update action to install recommonmark

.github/workflows/static.yml

@@ -35,7 +35,7 @@ jobs:
         uses: actions/configure-pages@v4
       - name: Install dependencies
         run: |
-          python -m pip install -U sphinx nbsphinx
+          python -m pip install -U sphinx nbsphinx recommonmark
           python -m pip install sphinx-rtd-theme
       - name: make the sphinx docs
         run: |