BUG: Fix doc build bug

Author: bashtage

.github/workflows/generate-documentation.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.10]
+        python-version: ["3.10"]
     steps:
     - name: Checkout
       uses: actions/checkout@v3