Attempt to fix vuepress site

.github/workflows/docs.yaml

@@ -25,10 +25,10 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: '16'
+          node-version: '18'  # Updated to Node.js 18
 
       - name: Install dependencies
-        run: npm install
+        run: npm ci
         working-directory: './docs'
 
       - name: Build documentation