Update build_documentation.yml

Author: santaimpersonator

.github/workflows/build_documentation.yml

@@ -23,8 +23,10 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
         with:
-          submodules: true
+          submodules: recursive
 
+      - name: Update submodules
+        run: git submodule update
       - name: Install pgnquant for optimize plugin
         run: sudo apt-get install pngquant