Update doc for `brew livecheck`
Update doc for `brew livecheck`

nandub/brew,MikeMcQuaid/brew,Homebrew/brew,MikeMcQuaid/brew,MikeMcQuaid/brew,nandub/brew,Homebrew/brew,nandub/brew,Homebrew/brew,nandub/brew,Homebrew/brew,MikeMcQuaid/brew