Update documentation.yaml

.github/workflows/documentation.yaml

@@ -17,7 +17,7 @@ jobs:
           sudo apt-get install -y pandoc
       - name: Install dependencies
         run: |
-          pip install ".[docs]""
+          pip install ".[docs]"
           python -m ipykernel install --user --name python3
       - name: Sphinx build
         run: |