Codecademy Docs - GitHub

Can someone give me some direction on this GitHub Codecademy Docs contribution? I’m supposed to contribute to the docs, reading thru the available topics they are not on Swift Language so can’t help there.

Does that mean that perhaps I should write my own content and submit it? I realize we are trying to practice making pull requests, commits, etc on Github but somewhat unclear if I’m assigned a topic (on Swift language) or if I’m free to write on whatever topic I see fit as long as it’s useful.