Be more specific in an example of fortune's -e option.

PR:		32085
Submitted by:	setantae@submonkey.net <setantae@submonkey.net>

games/fortune/fortune/fortune.6

@@ -162,7 +162,7 @@ The
 option says to consider all files equal;
 thus
 .Bd -literal -offset indent
-fortune -e
+fortune -e funny not-funny
 .Ed
 .Pp
 is equivalent to