That is the correct one. From the series page, I click on the TVDB link, and it takes me here: http://www.thetvdb.com/?tab=series&id=292157
The series page has the correct information, and even shows the correct 8 episodes for Season 1.
Here's an interesting thing. On thetvdb, it's got the original air date of 01/07/2017, although if you go look at FX's website, it doesn't have the premiere date until 01/10/2017. Could this just be that thetvdb is not setup correctly?