fix: filesize union

components/fileList/fileList.axml

@@ -8,7 +8,7 @@
       <view class="file-title">
         <text>{{item.fileName.slice(0, item.fileName.length  - 5)}}</text>
         <text>{{item.fileName.slice(-5)}}</text></view>
-      <view class="file-size">{{(item.fileSize/1024/1024).toFixed(2)}}KB</view>
+      <view class="file-size">{{(item.fileSize/1024/1024).toFixed(2)}}M</view>
       <view a:if="{{isCanDelete}}" class="iconfont iconicon_noAgreed1" catchTap="removeFile" data-id="{{item.fileId}}"></view>
     </view>
   </view>