message: docs: fix website redirect
diff: @@ -36,6 +36,12 @@ export default {
  htmlMeta: {
  'docsearch:version': 'v4',
  },
  + headHtml: `<script>
  +if (location.host === 'youzan.github.io') {
  +location.href = location.href.replace('youzan.github.io', 'vant-ui.github.io');
  +}
  +</script>
  +`,
  locales: {
  'zh-CN': {
  title: 'Vant 4',
  