Ayu theme hover not noticible

[pickfire]

Note that "Ayu" is already highlighted, it happens to mdbook too.

CC @GuillaumeGomez

[GuillaumeGomez]

The contrast is too small indeed. Want to send a fix?

[pickfire]

I will pass on this, I sent too many pull requests today, I can do this maybe another day (a few days) or if anyone is interested can take up this task before I do.

[GuillaumeGomez]

I'll certainly send a PR tomorrow then.