status: 2023q2: mfsBSD: include::

Adjacent _index.adoc will be the proper place for
include::shared/authors.adoc[]

Reported-by: salvadore
Fixes: 219ac239e0 status: 2023q2: mfsBSD: correction, and a few minor changes
Pull-request: https://github.com/freebsd/freebsd-doc/pull/207