[css3-text] Default UA Stylesheet for rt tag

It was pointed out that rt tag (ruby text) should not only suppress text-emphasis but also underlines as well.

So, although it's noted as informative, I'd like to propose to change Appendix D: Default UA Stylesheet[1]
]]
rt { text-emphasis: none; }
[[

To:

]]
rt {
  text-decoration-line: remove-all;
  text-emphasis: none;
}
[[


[1] http://dev.w3.org/csswg/css3-text/#default-stylesheet

Regards,
Koji