update node to 22

Author: flyerhzm

.github/workflows/main.yml

@@ -31,7 +31,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 22
       - name: Install required npm dependencies
         run: npm install -g markdown-to-html
       - name: Create docs