Consider using brew install --cask in FAQ

Describe the bug
The FAQ suggests using the brew command if the user wishes to install MacVim from a package manager:

If you would like to use a package manager instead, you can use Homebrew to install MacVim. Simply download Homebrew and do brew install macvim.

Following these instructions, MacVim is not available from the Applications folder and thus not found by Spotlight.

To Reproduce
Run brew install macvim

Expected behavior
I can launch MacVim from Applications folder in Finder.

Proposed Solution
Homebrew recommends "cask" installs for pre-built applications. The syntax for such an install is

brew install --cask macvim

Recommend updating FAQ to use this command.

打开链接的 MacVim wiki FAQ，找到 Homebrew 的安装说明。将文档中的命令与提议的 cask 命令进行核对，然后确认完成后的 FAQ 会告诉用户如何安装 MacVim，使其显示在 Applications 中并可通过 Spotlight 找到。