docs: add Download on GitHub button badge to README

Author: sudo-py-dev

README.md

@@ -23,6 +23,10 @@
   <a href="https://github.com/sudo-py-dev/SaveTo/releases/latest/download/app-googlePlay-release.apk">
     <img src="https://img.shields.io/badge/Download-Google%20Play%20APK-blue?style=for-the-badge&logo=googleplay&logoColor=white" height="40" alt="Download Google Play APK" />
   </a>
+  &nbsp;&nbsp;
+  <a href="https://github.com/sudo-py-dev/SaveTo/releases/latest">
+    <img src="https://img.shields.io/badge/Download_on-GitHub-black?style=for-the-badge&logo=github&logoColor=white" height="40" alt="Download on GitHub" />
+  </a>
 </p>
 
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