puppet: update errorformat to ignore a general message
puppet: update errorformat to ignore a general message

The checker was always outputting this if syntax errors were detected:
    err: Try 'puppet help parser validate' for usage,

So just ignore it. See #157

nikmartin/dotfiles,wezhang/vim-setup,wezhang/vim-setup,wezhang/vim-setup,wezhang/vim-setup,wezhang/vim-setup,wezhang/vim-setup