(MODULES-4161) edit for localization
(MODULES-4161) edit for localization

Requested changes for localization:
* values such as true, false, undef in backticks
* Optional/Required, Data types, and Default values on new lines to reduce translation costs
* hard line breaks within sentences removed
* more consistent language around default exceptions (looking at you, AIX and Solaris).

puppetlabs/puppetlabs-ntp,bmjen/puppetlabs-ntp,DavidS/puppetlabs-ntp,fuel-infra/puppetlabs-ntp