explain: don't fail if a tap is missing
explain: don't fail if a tap is missing

lordlycastle/homebrew-command-not-found,Homebrew/homebrew-command-not-found,bfontaine/homebrew-command-not-found,lordlycastle/homebrew-command-not-found,bfontaine/homebrew-command-not-found,Homebrew/homebrew-command-not-found