github_packages: fix typo.
github_packages: fix typo.

EricFromCanada/brew,Homebrew/brew,claui/brew,MikeMcQuaid/brew,EricFromCanada/brew,JCount/brew,JCount/brew,MikeMcQuaid/brew,nandub/brew,nandub/brew,sjackman/homebrew,sjackman/homebrew,EricFromCanada/brew,MikeMcQuaid/brew,sjackman/homebrew,JCount/brew,Homebrew/brew,sjackman/homebrew,JCount/brew,Homebrew/brew,claui/brew,MikeMcQuaid/brew,claui/brew,Homebrew/brew,claui/brew,EricFromCanada/brew,nandub/brew,nandub/brew