editorial changes for ntp 4.2.x release
editorial changes for ntp 4.2.x release

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