调整 video 示例，支持子组件。

pages/component/video/video.uvue

@@ -10,7 +10,7 @@
       :http-cache="httpCache" :play-strategy="playStrategy" :danmu-list="danmuList" @play="onPlay" @pause="onPause"
       @ended="onEnded" @timeupdate="onTimeUpdate" @waiting="onWaiting" @error="onError" @progress="onProgress"
       @fullscreenclick="onFullScreenClick" @controlstoggle="onControlsToggle" @fullscreenchange="onFullScreenChange">
-      <!-- #ifdef APP-ANDROID -->
+      <!-- #ifdef APP -->
       <image v-if="subCompEnable && subCompShow" class="img-fast-backward"
         src="../../../static/test-video/fast-backward.png" @tap="fastBackward"></image>
       <image v-if="subCompEnable && subCompShow" class="img-fast-forward"
@@ -26,7 +26,7 @@
           <button type="primary" @click="pause">视频格式示例</button>
         </navigator>
       </view>
-      <!-- #ifdef APP-ANDROID -->
+      <!-- #ifdef APP -->
       <view class="uni-flex uni-btn-v" style="justify-content: space-between;align-items: center;">
         <text class="uni-title" style="width: 80%;">子组件实现快进、快退、发送弹幕功能（全屏后显示）</text>
         <switch :checked="subCompEnable" @change="onSubCompEnableChange" />