Fix Homebrew formula to use HEAD and update docs

- Switch from main branch archive to HEAD to avoid SHA256 mismatches
- Update README with correct two-argument tap command
- Remove invalid version string
- Add note explaining repository naming

Author: hirotaka

Formula/try.rb

@@ -1,9 +1,7 @@
 class Try < Formula
   desc "Fresh directories for every vibe - lightweight experiments for people with ADHD"
   homepage "https://github.com/tobi/try"
-  url "https://github.com/tobi/try/archive/refs/heads/main.tar.gz"
-  sha256 "dd3753f38b5c35597c8c2528a19efd7e4289bbbe977d18e2e299a2a57b393a8e"
-  version "main"
+  head "https://github.com/tobi/try.git", branch: "main"
 
   depends_on "ruby"
 

README.md

@@ -192,7 +192,7 @@ nix run github:tobi/try init ~/my-tries
 ### Quick start
 
 ```bash
-brew tap tobi/try
+brew tap tobi/try https://github.com/tobi/try
 brew install try
 ```