Update README.md

Author: xhunmon

001-Downloader/README.md

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 # 资源下载器
 本项目主要通过网络上开源的项目聚合成了一个跨平台的下载工具，可批量下载抖音、快手视音频资源。下载地址：
 
-MacOS：[Downloader1.0.3-mac](https://github.com/xhunmon/PythonIsTools/releases/download/v1.0.3/Downloader1.0.3.app)
+MacOS：[Downloader1.0.3-mac](https://github.com/xhunmon/PythonIsTools/releases/download/v1.0.3/Downloader1.0.3.app.zip)
 
 Window：[downloader1.0.1-window.exe](https://github.com/xhunmon/PythonIsTools/releases/download/v1.0.1/downloader1.0.1-window.exe) （已停用，待更新）