message: fix(cli): template v-for warning
diff: <h2 v-if="config.description" class="demo-home__desc">
  {{ config.description }}
  </h2>
  - <template v-for="(group, index) in config.nav">
  - <demo-home-nav :group="group" :lang="lang" :key="index" />
  - </template>
  + <demo-home-nav
  + v-for="(group, index) in config.nav"
  + :key="index"
  + :lang="lang"
  + :group="group"
  + />
  </div>
  </template>
  