* Change example syntax on authorized_key module
* Change example syntax on cron module
* Change example syntax on group module
* Change example syntax on hostname module
* Change example syntax on seboolean module
* Change example syntax on selinux module
* Change example syntax on service module
* Change example syntax on sysctl module
* Change example syntax on systemd module
* Change example syntax on user module
* Change example syntax on debug module
* Change example syntax on fail module
* Change example syntax on include module
* Change example syntax on include_role module
* Change example syntax on include_vars module
* Change example syntax on pause module
* Change example syntax on wait_for module
* Change example syntax on apache2_module module
* > Change example syntax on django_manage module
* Change example syntax on htpasswd module
Warning catches typos in the filename. Since the playbook is saying
"make sure this user doesn't have an entry" it makes more sense to warn
than to error.
Fixes#2619