Drop sub tag from README heading

Author: farouqaldori

README.md

@@ -1,6 +1,6 @@
 <div align="center">
   <img src="ClaudeIsland/Assets.xcassets/AppIcon.appiconset/icon_128x128.png" alt="Logo" width="100" height="100">
-  <h3 align="center">Vibe Notch <sub>(previously Claude Island)</sub></h3>
+  <h3 align="center">Vibe Notch (previously Claude Island)</h3>
   <p align="center">
     A macOS menu bar app that brings Dynamic Island-style notifications to Claude Code CLI sessions.
     <br />