cmd/info: fix missing formula reference.
cmd/info: fix missing formula reference.

Fixes #7639

nandub/brew,vitorgalvao/brew,MikeMcQuaid/brew,konqui/brew,nandub/brew,JCount/brew,mahori/brew,MikeMcQuaid/brew,Homebrew/brew,MikeMcQuaid/brew,konqui/brew,claui/brew,reitermarkus/brew,Homebrew/brew,JCount/brew,MikeMcQuaid/brew,reitermarkus/brew,mahori/brew,EricFromCanada/brew,sjackman/homebrew,mahori/brew,reitermarkus/brew,EricFromCanada/brew,sjackman/homebrew,claui/brew,JCount/brew,vitorgalvao/brew,claui/brew,nandub/brew,sjackman/homebrew,reitermarkus/brew,Homebrew/brew,EricFromCanada/brew,sjackman/homebrew,mahori/brew,claui/brew,vitorgalvao/brew,konqui/brew,nandub/brew,Homebrew/brew,EricFromCanada/brew,JCount/brew,konqui/brew,vitorgalvao/brew