Update editor's draft URL

Author: fantasai

css2-src/issues-lc-2011.html

@@ -15,7 +15,7 @@
         <h1>Cascading Style Sheets Level 2 Revision 1 (CSS 2.1) Disposition of Comments</h1>
 
         <p>Last call document: <a href="http://www.w3.org/TR/2010/WD-CSS2-20101207/">http://www.w3.org/TR/2010/WD-CSS2-20101207/</a></p>
-        <p>Editor's draft: <a href="http://www.w3.org/Style/css2-updates/css2/">http://www.w3.org/Style/css2-updates/css2/</a></p>
+        <p>Editor's draft: <a href="http://www.w3.org/Style/css2-updates/draft-PR-CSS21-201103XX/">http://www.w3.org/Style/css2-updates/draft-PR-CSS21-201103XX/</a>
 
         <p>The following color coding convention is used for comments:</p>