docs: update homebrew tap instructions

At some point I made this a more generic repo to handle
any and all homebrew packages that I want to maintain.

Signed-off-by: Jack Mordaunt <jackmordaunt.dev@gmail.com>

readme.md

@@ -68,7 +68,7 @@ winget install icnsify
 ### [Brew](https://brew.sh)
 
 ```sh
-brew tap jackmordaunt/homebrew-icnsify # Ensure tap is added first.
+brew tap jackmordaunt/homebrew-tap # Ensure tap is added first.
 brew install icnsify
 ```