docs/167832: [patch] swapon(2) (and elsewhere) refer to non-existent block devices

[eadler at FreeBSD.org]

Synopsis: [patch] swapon(2) (and elsewhere) refer to non-existent block devices

Responsible-Changed-From-To: freebsd-doc->eadler
Responsible-Changed-By: eadler
Responsible-Changed-When: Sun May 13 22:22:22 UTC 2012
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=167832