[css2] Applied errata

http://www.w3.org/Style/css2-updates/REC-CSS2-20110607-errata.html#s.15.3b

--HG--
extra : convert_revision : svn%3A73dc7c4b-06e6-40f3-b4f7-9ed1dbc14bfc/trunk%403288

Author: bert-github

css2/properties/properties.db

@@ -449,7 +449,7 @@ table-cell | table-caption | none | inherit;;
 */
 
 /* font-family;;
-  [[ <family-name> | <generic-family> ] [, <family-name>| <generic-family>]* ] | inherit;;
+  [[ <family-name> | <generic-family> ] [, [ <family-name>| <generic-family>] ]* ] | inherit;;
   depends on user agent;;
   *;;
   yes;;