fix: use fully qualified Homebrew formula name

The shorthand `brew install harveyrandall/bsky-cli` does not resolve
the formula automatically. The explicit form with tap/formula
(`harveyrandall/bsky-cli/bsky-cli`) is required.

Author: harveyrandall

README.md

@@ -27,7 +27,7 @@ bun add -g @harveyrandall/bsky-cli
 ### Homebrew (macOS / Linux)
 
 ```bash
-brew install harveyrandall/bsky-cli
+brew install harveyrandall/bsky-cli/bsky-cli
 ```
 
 ### Download a binary

docs/getting-started.md

@@ -34,7 +34,7 @@
 === "Homebrew"
 
     ```bash
-    brew install harveyrandall/bsky-cli
+    brew install harveyrandall/bsky-cli/bsky-cli
     ```
 
 === "curl"

docs/index.md

@@ -23,7 +23,7 @@ A command-line client for [Bluesky](https://bsky.app), built with TypeScript.
 === "Homebrew"
 
     ```bash
-    brew install harveyrandall/bsky-cli
+    brew install harveyrandall/bsky-cli/bsky-cli
     ```
 
 === "Binary"