Reference SendHoldTimer RFC in bgpd(8)

OK claudio@

usr.sbin/bgpd/bgpd.8

@@ -1,4 +1,4 @@
-.\" $OpenBSD: bgpd.8,v 1.78 2023/04/03 10:48:00 claudio Exp $
+.\" $OpenBSD: bgpd.8,v 1.79 2024/11/06 12:01:39 job Exp $
 .\"
 .\" Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: April 3 2023 $
+.Dd $Mdocdate: November 6 2024 $
 .Dt BGPD 8
 .Os
 .Sh NAME
@@ -517,6 +517,15 @@ has been started.
 .Re
 .Pp
 .Rs
+.%A J. Snijders
+.%A B. Cartwright-Cox
+.%A Y. Qu
+.%D November 2024
+.%R RFC 9687
+.%T Border Gateway Protocol 4 (BGP-4) Send Hold Timer
+.Re
+.Pp
+.Rs
 .%A A. Azimov
 .%A E. Bogomazov
 .%A R. Bush