underlines plugin description is bad

[Akuli]

[00:56]	Moosems	underlines.py just confused me
[00:57]	Akuli	underlines.py does underlines that show a tooltip when hovered
[00:57]	Akuli	if you just want an underline, it's more than you need
[00:57]	Moosems	oh

I think something like "underlines with tooltip" would be much better than the current "underlines in code to indicate different things"