Fix the description of the -h option.

Reported by:	swills
MFC after:	3 days


git-svn-id: svn+ssh://svn.freebsd.org/base/head@272157 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Make lagg protocols detach methods returning void.

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@272158 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f