chore: increase node version for docs test (#1998)

.github/workflows/docs-test.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Setup Node.js environment
         uses: actions/setup-node@v2.4.1
         with:
-          node-version: "14"
+          node-version: "16"
           cache: "yarn"
 
       - name: Install dependencies