Update video.md

docs/component/video.md

@@ -95,7 +95,7 @@
     <view>
         <view class="uni-padding-wrap uni-common-mt">
             <view>
-                <video id="myVideo" src="https://img.cdn.aliyun.dcloud.net.cn/guide/uniapp/%E7%AC%AC1%E8%AE%B2%EF%BC%88uni-app%E4%BA%A7%E5%93%81%E4%BB%8B%E7%BB%8D%EF%BC%89-%20DCloud%E5%AE%98%E6%96%B9%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B@20200317.mp4"
+                <video id="myVideo" src="https://qiniu-web-assets.dcloud.net.cn/unidoc/zh/2minute-demo.mp4"
                     @error="videoErrorCallback" :danmu-list="danmuList" enable-danmu danmu-btn controls></video>
             </view>
             <!-- #ifndef MP-ALIPAY -->