docs/154934: typo fix #2 "is is" -> "is"

[brucec at FreeBSD.org]

Synopsis: typo fix #2 "is is" -> "is"

State-Changed-From-To: open->patched
State-Changed-By: brucec
State-Changed-When: Wed Feb 23 09:22:59 UTC 2011
State-Changed-Why: 
Committed to HEAD.


Responsible-Changed-From-To: freebsd-doc->brucec
Responsible-Changed-By: brucec
Responsible-Changed-When: Wed Feb 23 09:22:59 UTC 2011
Responsible-Changed-Why: 
Take.

http://www.freebsd.org/cgi/query-pr.cgi?pr=154934