[css2] Added mistakenly deleted semicolons back again.

--HG--
extra : convert_revision : svn%3A73dc7c4b-06e6-40f3-b4f7-9ed1dbc14bfc/trunk%402888

Author: bert-github

css2/properties/properties.db

@@ -856,7 +856,7 @@ leftwards | rightwards | inherit;;
 /* page-break-inside;;
   avoid | auto | inherit;;
   auto;;
-  block-level elements (but see text)
+  block-level elements (but see text);;
   no;;
   N/A;;
   visual, paged;;