fix docs

.github/workflows/docs.yaml

@@ -17,7 +17,7 @@ jobs:
           python-version: '3.11' 
       - name: Install dependencies
         run: |
-          pip install jsonschema<4.18.0
+          pip install "jsonschema<4.18.0"
           pip install sphinx sphinx_rtd_theme sphinx_rtd_dark_mode myst_nb referencing
           pip uninstall referencing
           pip install pennylane==0.33.1 pennylane-lightning==0.33.1