docs/155366: [patch] change "an" -> "a" before &os;

[jkois at FreeBSD.org]

Synopsis: [patch] change "an" -> "a" before &os;

Responsible-Changed-From-To: freebsd-doc->jkois
Responsible-Changed-By: jkois
Responsible-Changed-When: Tue Mar 8 09:45:13 UTC 2011
Responsible-Changed-Why: 
Take.


http://www.freebsd.org/cgi/query-pr.cgi?pr=155366