message: docs(forms): clarify note in reactive forms doc
  PR Close
diff: @@ -596,7 +596,7 @@ within the `form` element.
  *Reminder*: Ignore the many mentions of `form-group`,
  `form-control`, `center-block`, and `checkbox` in this markup.
  Those are _bootstrap_ CSS classes that Angular itself ignores.
  -Pay attention to the `formGroupName` and `formControlName` attributes.
  +Pay attention to the `[formGroup]` and `formControlName` attributes.
  They are the Angular directives that bind the HTML controls to the
  Angular `FormGroup` and `FormControl` properties in the component class.
  