[src/trunk]: src/share/man/man9 Replace main(9) reference with code location

[wiz <wiz%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/160fa3d7d882
branches:  trunk
changeset: 377323:160fa3d7d882
user:      wiz <wiz%NetBSD.org@localhost>
date:      Fri Jul 07 13:15:00 2023 +0000

description:
Replace main(9) reference with code location

diffstat:

 share/man/man9/heartbeat.9 |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (20 lines):

diff -r 3d6a48ab34e3 -r 160fa3d7d882 share/man/man9/heartbeat.9
--- a/share/man/man9/heartbeat.9        Fri Jul 07 12:59:45 2023 +0000
+++ b/share/man/man9/heartbeat.9        Fri Jul 07 13:15:00 2023 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: heartbeat.9,v 1.2 2023/07/07 12:59:45 wiz Exp $
+.\"    $NetBSD: heartbeat.9,v 1.3 2023/07/07 13:15:00 wiz Exp $
 .\"
 .\" Copyright (c) 2023 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -143,7 +143,9 @@ marked online.
 Start monitoring heartbeats systemwide.
 .Pp
 Called by
-.Xr main 9
+.Fn main
+in
+.Pa sys/kern/init_main.c
 as soon as soft interrupts can be established.
 .It Fn heartbeat_suspend
 Suspend heartbeat monitoring of the current CPU.