Commit e695500d3c updated the policy table
to match RFC 6724, which obsoletes RFC 3484.
Add a reference to RFC 6724, and mark it up as a technical report (%R).
MFC after: 3 days
Signed-off-by: Jose Luis Duran <jlduran@gmail.com>
Reviewed by: imp, glebius
Pull Request: https://github.com/freebsd/freebsd-src/pull/1375