Regexp should be rename to Regex

[Capt0rr]

This is mostly in the realm of personal taste I suppose but I think it reaches beyond that.

I understand this spelling is inherited from the underlying golang pkg but a) I think that pkg is itself is mispelled, and b) having this as part of the Rye language makes it stick out a lot more than a Go module import (which is immediately given a new name and the spelling forgotten about).

"Regex" is the far more dominant spelling (and pronunciation).

I think while the Rye language is very young this should be corrected now if you're not 100% set on sticking to "regexp" (which you're free to do).

It's a small but jarring wart visually, cognitively and finger-memory-ly, in an otherwise very simple, predictable, clean and visually lite language.

[refaktor]

I naturally also used regex so it's more common for me, but I thought that I had it wrong all along. I didn't delve deeper though. If regex is also common or even more dominant I am all for it, since it's also simpler and shorter.

I will change it with next release. Thank you for your feedback!