Fix changed URL on MySQL website.

We have designed a set of special @emph{Conditional Use} logos that may be

downloaded from our web site at

@uref{http://www.mysql.com/downloads/logos.html}

@uref{http://www.mysql.com/press/logos.html}

and used on third-party web sites without written permission from

@code{MySQL AB}.

The use of these logos is not entirely unrestricted but, as the name