docs/123255: mistake in ng_bpf(4) manpage

[linimon at FreeBSD.org]

Old Synopsis: mistake in ng_bpf manpage
New Synopsis: mistake in ng_bpf(4) manpage

Responsible-Changed-From-To: freebsd-bugs->freebsd-doc
Responsible-Changed-By: linimon
Responsible-Changed-When: Wed Apr 30 14:21:59 UTC 2008
Responsible-Changed-Why: 
reclassify.

http://www.freebsd.org/cgi/query-pr.cgi?pr=123255