How is the compatibility of games updated?

I searched all the repos I could find, but I did not find the database https://rpcs3.net/compatibility is using. Since I tested a game earlier and it is now playable (https://forums.rpcs3.net/thread-197864.html), I'd like to file a PR to set the status to Playable, unless this is not possible because the game requires Write Color Buffers.

Compatibility list is updated once a month, once it is updated it will show as Playable on the website