Resolve an ambiguity with the definition of a new auth-group
Resolve a markup mistake

Reviewed by:	trasz
Approved by:	bcr (mentor), wblock (mentor)
Sponsored by:	ScaleEngine Inc.
CR:		https://reviews.freebsd.org/D735


git-svn-id: svn+ssh://svn.freebsd.org/base/head@271560 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f