[whatwg] Editorial Bug: "Couple" of Appendicies

[Smylers]

A very minor niggle with the 'Structure of this specification' section,
which says:

  There are also a couple of appendices, defining shims for WYSIWYG
  editors, rendering rules for Web browsers, and listing areas that are
  out of scope for this specification.

    http://www.whatwg.org/specs/web-apps/current-work/#structure

That's 3 appendicies, which is more than a couple.

Smylers