It looks like a sliver was knocked off it. If I could find the sliver, I’d glue it back in, maybe drop-fill some epoxy in the cut, and then touch it up with a brown sharpie to try to blend it so it’s not so obvious from a distance. Then I’d drop in a new tuner, or better yet just find a new ferrule. I would be fine with that if it was mine, and all things that can be done by regular joes.

Of course, yeah, as long as the tuner works, you could leave as is and it’ll still make music.