docs: fix homebrew install instructions to include tap step

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: minsoo-web

README.md

@@ -7,7 +7,8 @@ Migrate VS Code / Cursor themes to [Superset](https://superset.dev), [Warp](http
 ### Homebrew
 
 ```sh
-brew install hamsurang/chromaport/chromaport
+brew tap hamsurang/chromaport
+brew install chromaport
 ```
 
 ### Cargo