docs(forms): ngSubmit is an output property of NgForm directive (#3056)
docs(forms): ngSubmit is an output property of NgForm directive (#3056)

incorporates and closes PR #3040
IdeaBlade/angular.io,chalin/angular.io,onyoon7/angular-ko,angular/angular.io,Urigo/angular.io,onyoon7/angular-ko,chalin/angular.io,rsreimer/angular.io,angular/angular-cn,IdeaBlade/angular.io,onyoon7/angular-ko,angular/angular-cn,angular/angular-cn,Urigo/angular.io,rsreimer/angular.io,Urigo/angular.io,juleskremer/angular.io,angular/angular.io,angular/angular.io,angular/angular-ko,IdeaBlade/angular.io,angular/angular-ko,angular/angular-ko,rsreimer/angular.io,IdeaBlade/angular.io,angular/angular-cn,angular/angular-cn,chalin/angular.io,IdeaBlade/angular.io,chalin/angular.io,onyoon7/angular-ko,chalin/angular.io,juleskremer/angular.io,angular/angular-ko,rsreimer/angular.io,juleskremer/angular.io,rsreimer/angular.io,juleskremer/angular.io,angular/angular-ko,Urigo/angular.io,angular/angular.io,Urigo/angular.io,angular/angular.io,juleskremer/angular.io,onyoon7/angular-ko