FAQ: Tetxure issues

There seem to be some issues with Texture compression and Intel GPUs
https://www.teeworlds.com/forum/viewtopic.php?id=11172
https://www.teeworlds.com/forum/viewtopic.php?id=11204

This should be added to the FAQ

[Dune-jr]

I believe this was fixed by teeworlds/teeworlds@7ff37cb

[Dune-jr]

Nevermind, this is a separate fix, according to @oy.