avoid cuda

.github/workflows/documentation.yml

@@ -17,7 +17,7 @@ jobs:
         run: |
           pip install --upgrade pip
           pip install -r requirements.txt
-          pip install torch==1.11.0+cpu torchvision==0.12.0+cpu torchaudio==0.11.0 --extra-index-url https://download.pytorch.org/whl/cpu
+          pip install --upgrade --force-reinstall torch==1.11.0+cpu torchvision==0.12.0+cpu torchaudio==0.11.0+cpu --extra-index-url https://download.pytorch.org/whl/cpu
           pip install --upgrade sphinx sphinx_rtd_theme myst-parser
           pip install --upgrade markdown-it-py[plugins]
           pip install --upgrade mdit-py-plugins