I'm guessing this correction would make it more confusing for more people than it would help.
Perhaps "AngularJS" and "Angular 2" would make an appropriate compromise between being correct and being clear to people not as familiar with the Angulars' release histories.
Perhaps "AngularJS" and "Angular 2" would make an appropriate compromise between being correct and being clear to people not as familiar with the Angulars' release histories.