Update QXmlQuery test result after default date format change.

QTime is not showing milliseconds by default anymore, when converted to
QString.

Change-Id: Iba745919ee1f034aebc75628a96efad5546f03c1
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>