update native-view.uvue

pages/component/native-view/native-view.uvue

 <template>
   <view>
     <text class="tips">说明：如果本地无 uts 插件编译环境请提交打包自定义基座查看效果</text>
+    <!-- native-button 通过 native-view 绑定原生button 实现的UTS插件-标准模式组件 -->
     <native-button class="native-button" style="width: 200px; height: 100px;" :text="buttonText" @buttonTap="ontap"
       @load="onload"></native-button>
+    <!-- native-time-picker 通过 native-view 绑定原生time-picker 实现的UTS插件-标准模式组件 -->
     <native-time-picker class="native-time-picker" :hour=2 :minute=3 @changed="onChanged"></native-time-picker>
   </view>
 </template>