message: chore: fix build:site scripts
diff: "lint": "cd packages/vant && yarn lint",
  "test": "cd packages/vant && yarn test",
  "build": "cd packages/vant && yarn build",
  - "build:site": "cd packages/vant && build:site"
  + "build:site": "cd packages/vant && yarn build:site"
  }
  }
  