Added a check for docs not being up-to-date.

.github/workflows/scaffold-test-docs.yml

@@ -21,6 +21,16 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
 
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+
+      - name: Check docs up-to-date
+        run: |
+          composer --working-dir=.utils install
+          npm run update-variables
+          git diff-index --quiet HEAD -- || { echo "Docs not up-to-date. Run `cd .scaffold && ahoy update-docs` and commit changes."; exit 1; }
+        working-directory: '${{ github.workspace }}/.scaffold/docs'
+
       - name: Install dependencies
         run: npm install
         working-directory: '${{ github.workspace }}/.scaffold/docs'