update USAGE.md

USAGE.md

@@ -104,7 +104,7 @@ scp src/main.sh user@server:/tmp/
 **方式三：直接下载**
 
 ```bash
-wget -O /tmp/main.sh https://raw.githubusercontent.com/your-repo/LinuxDiskAutoExpansion/main/src/main.sh
+wget -O /tmp/main.sh https://git.opensource-studio.info/database-mysql/LinuxDiskAutoExpansion/src/commit/8bce42bc846f6404052c64a6511a29e1b1bc7d95/src/main.sh
 ```
 
 ### 3.2 设置执行权限（可选）