[CSS22] Added link to Editors' draft.

Author: bert-github

css2/cover.src

@@ -33,6 +33,9 @@
   <dd><a href="http://www.w3.org/TR/2008/REC-CSS2-20080411/">
                http://www.w3.org/TR/2008/REC-CSS2-20080411/</a>
   -->
+  <dt>Editors' draft:
+  <dd><a href="http://dev.w3.org/csswg/css2/">
+               http://dev.w3.org/csswg/css2/</a>
   <dt>Editors:
   <dd class="vcard"><a class="url fn" lang=nl href="http://www.w3.org/People/Bos/">
                Bert Bos</a>