message: docs(Cell): updte icon size
diff: <van-cell icon="shop-o" :title="t('cell')">
  <template #right-icon>
  - <van-icon name="search" style="line-height: inherit;" />
  + <van-icon
  + name="search"
  + style="font-size: 16px; line-height: inherit;"
  + />
  </template>
  </van-cell>
  </demo-block>
  