Inaccuracy: Incorrect number of ARIA roles

Created by: tomlroach

Summary

On this page: https://a11yproject.com/posts/getting-started-aria/

The Aria roles section says:

There are four categories of ARIA roles.

But then it goes on to list 6 categories of role

Expected result

It should presumably say there are six roles. Or it should distinguish more clearly between the four roles being referred to, and the other two.

Actual result

Mismatch in number of roles listed and the number asserted in the content.