Ether/minor wording

[karenetheridge]

very minor fixes to grammar and an xref link

[handrews]

RFC xrefs actually work fine without text (although I should have used the <xref target="..." /> form to make the intent more clear. But we are inconsistent about it (the brackets happen when you don't provide text for the xref):

I'm fine with changing it this way (and nice catch on the missing "a"s) but it should probably go on some consistency checklist somewhere for later review across the spec.

[karenetheridge]

RFC xrefs actually work fine without text

Yup, I noticed when reading the marked up document that this link rendered differently (not badly, just differently) than all the others, and then saw why when I looked at the source. Inconsistencies bug me :)

[handrews]

@karenetheridge I'm all in favor of resolving the inconsistencies. I suspect there are more like this, but that's no reason not to merge this one. I don't think anyone else will object so I'll go ahead and do that.