Revert markup change that added p element in hgroup

Changing the spec source markup to use a p element in hgroup will need to wait until after the spec change lands.

Author: sideshowbarker

source

@@ -60,7 +60,11 @@
  </hgroup>
  <hgroup w-dev>
  <h1><a href="/dev/" rel=home>HTML: The Living Standard</a></h1>
+ <h2 class="no-num no-toc" id="dev-edition-h2">Edition for Web Developers &mdash; Last Updated <span class="pubdate">[DATE: 01 Jan 1901]</span></h2>
+ <!-- FIXME: once the spec is changed to allow p elements as in hgroup,
+ the h2 above needs to be changed to a p element; like this:
  <p class="no-num no-toc" id="dev-edition-h2">Edition for Web Developers &mdash; Last Updated <span class="pubdate">[DATE: 01 Jan 1901]</span></p>
+ -->
  </hgroup>
  <nav w-nosplit w-nodev w-noreview>
  <!-- Note: be sure to keep an even number of <a>s, for small screens where they appear in two columns. -->