Updating docblock for `\action\Request::is()`.
Updating docblock for `\action\Request::is()`.

qoqa/lithium,m4rcsch/lithium-core-library,pixelcog/lithium,graphis/lithium,SensCritique/lithium,davidpersson/lithium,pixelcog/lithium,mehlah/lithium,SensCritique/lithium,m4rcsch/lithium-core-library,graphis/lithium,davidpersson/lithium,datachand/lithium,wbeater/lithium,muyehub/lithium,jails/lithium,jails/lithium,UnionOfRAD/lithium,whowgames/lithium,UnionOfRAD/lithium,mehlah/lithium,datachand/lithium,qoqa/lithium,muyehub/lithium,wbeater/lithium,whowgames/lithium