checkhosts: change some output messages
checkhosts: change some output messages

Corrected poor English output, and mark line endings break as ERROR, the
others mark as NOTICE.

Signed-off-by: Andy Deng <838de740bcf6ee34477167db31cccc57b5d137a4@gmail.com>

ruidalin/hosts,racaljk/hosts,wsdjeg/hosts