"The Bowling Game Kata at but UncleBob" sounds wrong

The copy for the `source` of the bowling exercise sounds wrong:

> "The Bowling Game Kata **at but UncleBob**"

https://github.com/exercism/problem-specifications/blob/main/exercises/bowling/metadata.toml

The url is `butunclebob.com`, which is presumably why the copy reads the way it does