Added missing python-version

Author: mongkok

.github/workflows/docs.yml

@@ -2,7 +2,7 @@ name: Docs
 
 on:
   push:
-    branches: ['main']
+    branches: ["main"]
 
 jobs:
   build:
@@ -11,6 +11,8 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
 
       - uses: actions/cache@v3
         with: