[VE][66] New Error Message Suggestion

In Section 7.5.4 "Grouping elements: the DIV and SPAN elements", the W#C Recommendations (at http://www.w3.org/TR/REC-html40/struct/global.html#h-7.5.4 ) give examples that include <P> elements inside of <DIV> elements.

The W3C validator for Doctype "XHTML 1.0 Transitional" flags this use of <P> inside of <DIV> elements as an error, multiple times.  The error message is "document type does not allow the element "p" here; assuming missing "li" start-tag"