docs: remove mailing list references
docs: remove mailing list references

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