Update README.md

Author: jaywcjlove

README.md

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 Many many useful Web Online Tools For Web Developers & Programmers. Online preview: https://jaywcjlove.github.io/tools
 
-[![Get it on macOS](https://apps.apple.com/app/devhub/id6476452351)]
+[![Get it on macOS](http://jaywcjlove.github.io/sb/download/macos.svg)](https://apps.apple.com/app/devhub/id6476452351)
 
 [Docker](#docker) | [Desktop Application](#desktop-application)