[css2] fix wrong url

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extra : convert_revision : svn%3A73dc7c4b-06e6-40f3-b4f7-9ed1dbc14bfc/trunk%402634

Author: fantasai

css2/issues/issues-4

@@ -473,7 +473,7 @@ Proposal:
       to 300px otherwise). This is not what implementations do today.
       It is what SVG wants, and it is the most useful for authoring.
 
-      Text: http://lists.w3.org/Archives/Member/w3c-css-wg/2007JanMar/0069.html
+      Text: http://lists.w3.org/Archives/Member/w3c-svg-wg/2006OctDec/0373.html
             (+ changes for #3 to handle fallback)
 
    3. Use 300px times intrinsic ratio. This respects the original proposal