Update vale-test.yml

Author: Amanda-dong

.github/workflows/vale-test.yml

@@ -21,7 +21,5 @@ jobs:
         uses: vale-cli/vale-action@v2
         with:
           version: 3.12.0
-          files: |
-            docs/
-            src/pages/
+          files: '["docs/", "src/pages/"]'
           reporter: github-pr-review