amending workflow

Author: quentinhaenn

.github/workflows/sphinx.yml

@@ -14,7 +14,10 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Build HTML
-      uses: ammaraskar/sphinx-action@master
+      uses: ammaraskar/[email protected]
+      with:
+        prebuild_command: |
+          pip install -e ".[doc]"
     - name: Upload artifacts
       uses: actions/upload-artifact@v4
       with: