docs: fix reference to `routes` array in TOH tutorial (#40023)
docs: fix reference to `routes` array in TOH tutorial (#40023)

The previous tutorial content referred to a `Routes` member of
`AppRoutingModule`, which is not correct. Instead there is a
`routes` variable that is passed to the `forRoot()` method when
configuring the `AppRoutingModule`.

Replaces #36583

PR Close #40023

angular-indonesia/angular,brandonroberts/angular,angular/angular,ocombe/angular,ocombe/angular,JiaLiPassion/angular,mgechev/angular,alxhub/angular,manekinekko/angular,shairez/angular,ocombe/angular,gnomeontherun/angular,brandonroberts/angular,angular-indonesia/angular,blesh/angular,mgechev/angular,gkalpak/angular,angular/angular,angular-indonesia/angular,gkalpak/angular,gkalpak/angular,brandonroberts/angular,ocombe/angular,angular/angular,IdeaBlade/angular,alxhub/angular,manekinekko/angular,brandonroberts/angular,mgechev/angular,shairez/angular,angular/angular,manekinekko/angular,gnomeontherun/angular,manekinekko/angular,manekinekko/angular,manekinekko/angular,mgechev/angular,JiaLiPassion/angular,shairez/angular,brandonroberts/angular,angular-indonesia/angular,blesh/angular,ocombe/angular,alxhub/angular,JiaLiPassion/angular,blesh/angular,ocombe/angular,IdeaBlade/angular,shairez/angular,gnomeontherun/angular,mgechev/angular,blesh/angular,blesh/angular,IdeaBlade/angular,IdeaBlade/angular,gkalpak/angular,gnomeontherun/angular,alxhub/angular,shairez/angular,IdeaBlade/angular,brandonroberts/angular,alxhub/angular,JiaLiPassion/angular