spec/css2.1: update issue 2 link

Author: fantasai

spec/css2.1.txt

@@ -12,10 +12,11 @@ The following are known problems in the [[http://www.w3.org/TR/2007/CR-CSS21-200
   ;Summary : What should 'width' on columns and column groups really mean?
   ;Status : Needs proposal
 
+
 ==== Issue 2 ====
 
-  ;URL : http://lists.w3.org/Archives/Member/w3c-css-wg/2003JanMar/0273.html
-  ;Summary : Remove ''DELIM?'' from ''declaration'' definition in 4.1.1. (It was added there to enable vendor extensions, but that's already solved by allowing hyphens at the beginning of an identifier.)
+  ;URL : http://lists.w3.org/Archives/Public/www-style/2007Jul/0118.html
+  ;Summary : Remove ''DELIM?'' from ''declaration'' definition in 4.1.1. (It was [[http://lists.w3.org/Archives/Member/w3c-css-wg/2003JanMar/0273.html|added there]] to enable vendor extensions, but that's already solved by allowing hyphens at the beginning of an identifier.)
   ;Status : Needs resolution