docs/54009: Clarify the location of the splash image in the splash man page

[Tom Rhodes]

Synopsis: Clarify the location of the splash image in the splash man page

Responsible-Changed-From-To: freebsd-doc->trhodes
Responsible-Changed-By: trhodes
Responsible-Changed-When: Sat Aug 9 12:28:52 PDT 2003
Responsible-Changed-Why: 
I engaged in most of the conversation in regards to this PR, therefor assign it
to me.

http://www.freebsd.org/cgi/query-pr.cgi?pr=54009