[css-text-decor] Emphasis mark and ruby

Hi,

In the description of text-emphasis-position, the paragraph below the note
states:

If emphasis marks are applied to characters for which ruby is drawn in the
same position as the emphasis mark, the emphasis marks are placed above the
ruby.

I don't think the word "above" here is correct. I suggest that it should be
some word like "outside".

- Xidorn