update media fetch pro icon (#238)

Apps/MediaFetchPro/docker-compose.yml

@@ -58,7 +58,7 @@ x-casaos:
     en_us: Media Fetch PRO is an application to download video of youtube, bilibili and more websites in future with metadata to jellyfin, emby, plex and more softwares in future. Project - https://github.com/Media-Fetch-Pro/Media-Fetch-Pro
     zh_cn: Media Fetch PRO 可以从 Bilibili、Youtube等网站下载带有刮削的视频到 Jellyfin、Emby、Plex等软件组成好看的海报墙。项目地址 - https://github.com/Media-Fetch-Pro/Media-Fetch-Pro
   developer: CorrectRoadH
-  icon: https://cdn.jsdelivr.net/gh/IceWhaleTech/CasaOS-AppStore@main/Apps/MediaFetchPro/icon.jpg
+  icon: https://cdn.jsdelivr.net/gh/IceWhaleTech/CasaOS-AppStore@main/Apps/MediaFetchPro/icon.png
   screenshot_link:
     - https://cdn.jsdelivr.net/gh/IceWhaleTech/CasaOS-AppStore@main/Apps/MediaFetchPro/screenshot-1.png
     - https://cdn.jsdelivr.net/gh/IceWhaleTech/CasaOS-AppStore@main/Apps/MediaFetchPro/screenshot-2.png