security(7): security.bsd.see*: Be more accurate

Approved by: re (gjb)
Reviewed by: mhorne, pauamma_gundo.com
Sponsored by: Kumacom SAS
Differential Revision: https://reviews.freebsd.org/D41108

(cherry picked from commit 61b6e00bee1d39e9c688e728fbf3a4efcdb61e66)
(cherry picked from commit 74f2fb1778e815bfd982ca8a09f5b31dd93ccd0f)