ci: fix python version in pages

Author: gadomski

.github/workflows/pages.yml

@@ -28,7 +28,7 @@ jobs:
       - name: Set up Python 3.10
         uses: actions/setup-python@v4
         with:
-          python-version: 3.10
+          python-version: "3.10"
           cache: pip
           cache-dependency-path: setup.py
       - name: Install dependencies