chore: update README.md

Author: jaywcjlove

core/README.md

@@ -1,6 +1,7 @@
 <div markdown="1">
   <sup>Using <a href="https://wangchujiang.com/#/app" target="_blank">my app</a> is also a way to <a href="https://wangchujiang.com/#/sponsor" target="_blank">support</a> me:</sup>
   <br>
+  <a target="_blank" href="https://apps.apple.com/app/6758053530" title="Scap: Screenshot & Markup Edit for macOS"><img alt="Scap: Screenshot & Markup Edit" height="52" width="52" src="https://wangchujiang.com/appicon/scap.png"></a>
   <a target="_blank" href="https://apps.apple.com/app/6757317079" title="Screen Test for macOS"><img alt="Screen Test" height="52" width="52" src="https://wangchujiang.com/appicon/screen-test.png"></a>
   <a target="_blank" href="https://apps.apple.com/app/Deskmark/6755948110" title="Deskmark for macOS"><img alt="Deskmark" height="52" width="52" src="https://wangchujiang.com/appicon/deskmark.png"></a>
   <a target="_blank" href="https://apps.apple.com/app/Keyzer/6500434773" title="Keyzer for macOS"><img alt="Keyzer" height="52" width="52" src="https://wangchujiang.com/appicon/keyzer.png"></a>