docs/171580: syslogd: Document IPv6 address usage

[eadler at FreeBSD.org]

Old Synopsis: [bin] syslogd: Document IPv6 address usage
New Synopsis: syslogd: Document IPv6 address usage

Responsible-Changed-From-To: freebsd-bugs->eadler
Responsible-Changed-By: eadler
Responsible-Changed-When: Wed Sep 12 16:41:57 UTC 2012
Responsible-Changed-Why: 
fix synopsis & take

http://www.freebsd.org/cgi/query-pr.cgi?pr=171580