message: docs: update CDN link
diff: @@ -32,12 +32,12 @@ The easiest way to use Vant is to include a CDN link in the html file, after whi
  <!-- import style -->
  <link
  rel="stylesheet"
  - href="https://cdn.jsdelivr.net/npm/vant@next/lib/index.css"
  + href="https://cdn.jsdelivr.net/npm/vant@3/lib/index.css"
  />
  <!-- import script -->
  -<script src="https://cdn.jsdelivr.net/npm/vue@next"></script>
  -<script src="https://cdn.jsdelivr.net/npm/vant@next/lib/vant.min.js"></script>
  +<script src="https://cdn.jsdelivr.net/npm/vue@3"></script>
  +<script src="https://cdn.jsdelivr.net/npm/vant@3/lib/vant.min.js"></script>
  <script>
  // Render the Button component
  