docs(toh-6): show provider to use with a real back end (#2059)
docs(toh-6): show provider to use with a real back end (#2059)

Fixes #2055.
angular/angular.io,Urigo/angular.io,realappie/angular.io,angular/angular-es,angular/angular-cn,slm-sum/angular-ja,IdeaBlade/angular.io,GuzmanPI/angular-es,onyoon7/angular-ko,juleskremer/angular.io,angular/angular-es,SaloGala/angular-es,GuzmanPI/angular-es,NoahLuftYang/angular-ko,angular/angular-cn,angular/angular-es,NoahLuftYang/angular-ko,juleskremer/angular.io,angular/angular-es,rsreimer/angular.io,gyujincho/angular-ko,slm-sum/angular-ja,angular/angular-es,chalin/angular.io,naomiblack/angular.io,chalin/angular.io,realappie/angular.io,naomiblack/angular.io,gyujincho/angular-ko,NoahLuftYang/angular-ko,Urigo/angular.io,kwalrath/angular.io,kwalrath/angular.io,chalin/angular.io,NoahLuftYang/angular-ko,Urigo/angular.io,angular/angular-cn,juleskremer/angular.io,realappie/angular.io,GuzmanPI/angular-es,SaloGala/angular-es,juleskremer/angular.io,chalin/angular.io,angular/angular-ko,slm-sum/angular-ja,IdeaBlade/angular.io,onyoon7/angular-ko,chalin/angular.io,rsreimer/angular.io,angular/angular.io,Urigo/angular.io,slm-sum/angular-ja,angular/angular.io,realappie/angular.io,rsreimer/angular.io,gyujincho/angular-ko,kwalrath/angular.io,gyujincho/angular-ko,Urigo/angular.io,GuzmanPI/angular-es,GuzmanPI/angular-es,angular/angular.io,angular/angular-cn,realappie/angular.io,angular/angular-cn,kwalrath/angular.io,angular/angular-ko,SaloGala/angular-es,angular/angular.io,naomiblack/angular.io,onyoon7/angular-ko,naomiblack/angular.io,onyoon7/angular-ko,juleskremer/angular.io,SaloGala/angular-es,slm-sum/angular-ja,gyujincho/angular-ko,rsreimer/angular.io,naomiblack/angular.io,SaloGala/angular-es,onyoon7/angular-ko,IdeaBlade/angular.io,rsreimer/angular.io,NoahLuftYang/angular-ko,angular/angular-ko,kwalrath/angular.io,angular/angular-ko,angular/angular-ko,IdeaBlade/angular.io,IdeaBlade/angular.io