message: Improve documentation for install on macOS via brew cask
diff: @@ -131,8 +131,12 @@ pkg install alacritty
  brew cask install alacritty
  ```
  -Once the cask is installed, it is recommended to setup the [manual page](INSTALL.md#manual-page),
  -[shell completions](INSTALL.md#shell-completions), and [terminfo definitions](INSTALL.md#terminfo).
  +Once the cask is installed, it is recommended to setup the
  +[manual page](INSTALL.md#manual-page),
  +[shell completions](INSTALL.md#shell-completions), and
  +[terminfo definitions](INSTALL.md#terminfo). These instructions need to be
  +followed from within the Alacritty source for your version, which can be found
  +on the [GitHub releases page](https://github.com/alacritty/alacritty/releases).
  ### Windows
  