Add support for hsl functions without percentage signs

[DesertCarMechanic]

Describe the bug Writing hsl(83, 17%, 48%) works, but when writing something like hsl(20, 80, 20), there's no highlighting. I have a lua codebase where I use something like this, and I would like it to be highlighted.

Operating System: Arch Linux

Neovim Version: 0.8.0

Colorizer Version: latest

Additional context Add any other context about the problem here.

[catgoose]

I will get to this at some point