Update docs.yml

Author: MrXiaoM

.github/workflows/docs.yml

@@ -33,7 +33,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: '18.x'
+          node-version: '20.x'
       - name: Build
         run: |
           yarn