[css2] Added redundant text to make the status section better match the pubrules checker

--HG--
extra : convert_revision : svn%3A73dc7c4b-06e6-40f3-b4f7-9ed1dbc14bfc/trunk%402436

Author: bert-github

css2/cover.src

@@ -112,7 +112,7 @@ CSS3 Module that includes those feature(s)).
 <h2 id=status>Status of this document</h2>
 
 <p><em>This section describes the status of this document at the time
-of its publication. Other documents may supersede it. A list of
+of its publication. Other documents may supersede this document. A list of
 current W3C publications and the latest revision of this technical
 report can be found in the <a href="http://www.w3.org/TR/">W3C
 technical reports index at http://www.w3.org/TR/</a>.</em>
@@ -133,7 +133,9 @@ this document, please put the text "CSS21" in the subject, preferably
 like this: "[CSS21] &lt;summary of comment&gt;"
 
 <p>Publication as a Working Draft does not imply endorsement by the
-W3C Membership. It is inappropriate to cite this document as other
+W3C Membership. This is a draft document and may be updated, replaced or
+obsoleted by other documents at any time. It is inappropriate to
+cite this document as other 
 than work in progress.
 
 <p>A test suite and a report on implementations will be provided