doc(application factory): fix the doc
doc(application factory): fix the doc

fixes #1586

winstonewert/angular.dart,hitesh97/angular.dart,hitesh97/angular.dart,rkirov/angular.dart,ronlobo/angular.dart,SibuStephen/angular.dart,rkirov/angular.dart,ronlobo/angular.dart,ronlobo/angular.dart,hitesh97/angular.dart,rkirov/angular.dart,winstonewert/angular.dart,winstonewert/angular.dart,winstonewert/angular.dart,trinarytree/angular.dart,SibuStephen/angular.dart,SibuStephen/angular.dart,trinarytree/angular.dart,ronlobo/angular.dart,SibuStephen/angular.dart,trinarytree/angular.dart,rkirov/angular.dart,hitesh97/angular.dart,trinarytree/angular.dart