[Fedora-livecd-list] livecd-tools documentation reference to AUTHORS file

[Bruno Wolff III]

In the livecd-tools documentation there is a list of authors followed by:
See the AUTHORS file in the source distribution for the complete list of
credits.

However the AUTHORS file lists less people than what is in the documentation.
I'll add the extra people listed by name by the documentation into AUTHORS to
sort of fix this.

Eventually something else should probably be done.