docs(http): fix "Expecting and answering requests" example mistake
docs(http): fix "Expecting and answering requests" example mistake

Possibly overlooked testing documentation mistake fixed:
- `http.get('/data')` probably ought to be paired with `httpMock.expectOne('/data')` instead of `httpMock.expectOne('/data')`.

ValtoFrameworks/Angular-2,shairez/angular,blesh/angular,sarunint/angular,gjungb/angular,mlaval/angular,NathanWalker/angular,cironunes/angular,ocombe/angular,manekinekko/angular,shairez/angular,mlaval/angular,JiaLiPassion/angular,kegluneq/angular,ocombe/angular,vsavkin/angular,snaptech/angular,angular-indonesia/angular,matsko/angular,brandonroberts/angular,kegluneq/angular,alexeagle/angular,kara/angular,blesh/angular,mgechev/angular,mprobst/angular,robwormald/angular,jasonaden/angular,Toxicable/angular,ocombe/angular,IdeaBlade/angular,nosovk/angular,vsavkin/angular,StephenFluin/angular,pk-karthik/framework-js-angular,ultrasonicsoft/angular,matsko/angular,mzgol/angular,IgorMinar/angular,robwormald/angular,juristr/angular,ValtoFrameworks/Angular-2,gjungb/angular,vicb/angular,mgechev/angular,matsko/angular,blesh/angular,ultrasonicsoft/angular,petebacondarwin/angular,sarunint/angular,juristr/angular,kara/angular,matsko/angular,petebacondarwin/angular,mprobst/angular,LucasSloan/angular,jasonaden/angular,trshafer/angular,ValtoFrameworks/Angular-2,dsebastien/angular,mgiambalvo/angular,cironunes/angular,angular/angular,mgol/angular,mhevery/angular,StephenFluin/angular,mhevery/angular,tbosch/angular,manekinekko/angular,JiaLiPassion/angular,Toxicable/angular,filipesilva/angular,meeroslav/angular,LucasSloan/angular,dsebastien/angular,kegluneq/angular,alxhub/angular,gkalpak/angular,NathanWalker/angular,rkirov/angular,kara/angular,mgol/angular,rkirov/angular,IgorMinar/angular,chuckjaz/angular,mgol/angular,heathkit/angular,juleskremer/angular,mgol/angular,juleskremer/angular,filipesilva/angular,angular-indonesia/angular,nosovk/angular,vikerman/angular,smartm0use/angular,jasonaden/angular,IdeaBlade/angular,jasonaden/angular,sarunint/angular,NathanWalker/angular,Brocco/angular,mgol/angular,aboveyou00/angular,mhevery/angular,LucasSloan/angular,pk-karthik/framework-js-angular,Brocco/angular,shairez/angular,filipesilva/angular,vikerman/angular,hansl/angular,mgechev/angular,heathkit/angular,heathkit/angular,alexeagle/angular,dtoroshin/n2oDoc,mlaval/angular,dsebastien/angular,angularbrasil/angular,ghetolay/angular,robwormald/angular,mhevery/angular,dtoroshin/n2oDoc,alxhub/angular,ultrasonicsoft/angular,hansl/angular,angularbrasil/angular,rkirov/angular,Toxicable/angular,IgorMinar/angular,brandonroberts/angular,nosovk/angular,smartm0use/angular,gdi2290/angular,vikerman/angular,brandonroberts/angular,vsavkin/angular,wKoza/angular,nosovk/angular,dsebastien/angular,mhevery/angular,gdi2290/angular,IgorMinar/angular,dtoroshin/n2oDoc,smartm0use/angular,sarunint/angular,alxhub/angular,angularbrasil/angular,Brocco/angular,gjungb/angular,rkirov/angular,kara/angular,StephenFluin/angular,vikerman/angular,ocombe/angular,petebacondarwin/angular,sarunint/angular,robwormald/angular,LucasSloan/angular,hansl/angular,cironunes/angular,mzgol/angular,manekinekko/angular,ultrasonicsoft/angular,chuckjaz/angular,gkalpak/angular,trshafer/angular,heathkit/angular,dsebastien/angular,aboveyou00/angular,gjungb/angular,snaptech/angular,mlaval/angular,angular/angular,wKoza/angular,cironunes/angular,vicb/angular,vicb/angular,mgiambalvo/angular,wKoza/angular,kara/angular,alexeagle/angular,trshafer/angular,IdeaBlade/angular,mzgol/angular,snaptech/angular,IgorMinar/angular,pk-karthik/framework-js-angular,shairez/angular,Brocco/angular,wKoza/angular,juristr/angular,meeroslav/angular,Toxicable/angular,NathanWalker/angular,ValtoFrameworks/Angular-2,matsko/angular,aboveyou00/angular,juristr/angular,blesh/angular,NathanWalker/angular,gnomeontherun/angular,shairez/angular,nosovk/angular,ocombe/angular,meeroslav/angular,meeroslav/angular,LucasSloan/angular,snaptech/angular,mgiambalvo/angular,vsavkin/angular,hansl/angular,trshafer/angular,gkalpak/angular,dsebastien/angular,alexeagle/angular,ocombe/angular,pk-karthik/framework-js-angular,alxhub/angular,JiaLiPassion/angular,mgol/angular,angular-indonesia/angular,IgorMinar/angular,chuckjaz/angular,jonrimmer/angular,jonrimmer/angular,IdeaBlade/angular,aboveyou00/angular,chuckjaz/angular,manekinekko/angular,smartm0use/angular,juleskremer/angular,ValtoFrameworks/Angular-2,aboveyou00/angular,Brocco/angular,juristr/angular,gnomeontherun/angular,IdeaBlade/angular,jonrimmer/angular,ultrasonicsoft/angular,alexeagle/angular,ultrasonicsoft/angular,gkalpak/angular,gnomeontherun/angular,juristr/angular,jonrimmer/angular,hansl/angular,mprobst/angular,LucasSloan/angular,cironunes/angular,filipesilva/angular,mprobst/angular,hansl/angular,brandonroberts/angular,mgechev/angular,mzgol/angular,mzgol/angular,angularbrasil/angular,vsavkin/angular,gdi2290/angular,brandonroberts/angular,wKoza/angular,rkirov/angular,Toxicable/angular,mprobst/angular,mhevery/angular,blesh/angular,gjungb/angular,StephenFluin/angular,meeroslav/angular,tbosch/angular,gnomeontherun/angular,pk-karthik/framework-js-angular,vicb/angular,Brocco/angular,vikerman/angular,filipesilva/angular,kara/angular,mzgol/angular,cironunes/angular,kegluneq/angular,trshafer/angular,chuckjaz/angular,jonrimmer/angular,gdi2290/angular,jonrimmer/angular,dtoroshin/n2oDoc,mprobst/angular,vicb/angular,gdi2290/angular,Toxicable/angular,tbosch/angular,tbosch/angular,rkirov/angular,petebacondarwin/angular,robwormald/angular,JiaLiPassion/angular,heathkit/angular,angular/angular,gdi2290/angular,mlaval/angular,snaptech/angular,heathkit/angular,alxhub/angular,snaptech/angular,manekinekko/angular,angular/angular,ghetolay/angular,angular-indonesia/angular,mgiambalvo/angular,sarunint/angular,mgechev/angular,robwormald/angular,ghetolay/angular,StephenFluin/angular,alexeagle/angular,vikerman/angular,NathanWalker/angular,chuckjaz/angular,dtoroshin/n2oDoc,vicb/angular,smartm0use/angular,ghetolay/angular,kegluneq/angular,petebacondarwin/angular,manekinekko/angular,kegluneq/angular,angularbrasil/angular,ghetolay/angular,tbosch/angular,jasonaden/angular,brandonroberts/angular,petebacondarwin/angular,juleskremer/angular,trshafer/angular,juleskremer/angular,angularbrasil/angular,mgiambalvo/angular,aboveyou00/angular,jasonaden/angular,wKoza/angular