Updates scala.util.control.NonFatal documentation, as suggested in code review
Updates scala.util.control.NonFatal documentation, as suggested in code review

jvican/scala,felixmulder/scala,felixmulder/scala,martijnhoekstra/scala,felixmulder/scala,shimib/scala,scala/scala,lrytz/scala,scala/scala,scala/scala,martijnhoekstra/scala,jvican/scala,jvican/scala,slothspot/scala,shimib/scala,slothspot/scala,jvican/scala,scala/scala,scala/scala,slothspot/scala,shimib/scala,felixmulder/scala,martijnhoekstra/scala,jvican/scala,slothspot/scala,felixmulder/scala,jvican/scala,felixmulder/scala,martijnhoekstra/scala,felixmulder/scala,shimib/scala,lrytz/scala,shimib/scala,martijnhoekstra/scala,jvican/scala,martijnhoekstra/scala,slothspot/scala,slothspot/scala,lrytz/scala,shimib/scala,lrytz/scala,lrytz/scala,scala/scala,slothspot/scala,lrytz/scala