git: 5dd9d0605aff - main - if_stf: minor man page improvements

The branch main has been updated by kp:

URL: https://cgit.FreeBSD.org/src/commit/?id=5dd9d0605afff469cc2e98a9d74806eb7dfeb018

commit 5dd9d0605afff469cc2e98a9d74806eb7dfeb018
Author:     Kristof Provost <kp@FreeBSD.org>
AuthorDate: 2021-11-17 22:12:14 +0000
Commit:     Kristof Provost <kp@FreeBSD.org>
CommitDate: 2021-11-20 18:29:02 +0000

    if_stf: minor man page improvements
    
    - fix typo (router -> routers)
    - Remove 6bone reference, because that was phased out in 2006.
    
    Suggested by:   Pau Amma <pauamma@gundo.com>
    Sponsored by:   Rubicon Communications, LLC ("Netgate")
    Differential Revision:  https://reviews.freebsd.org/D33046
---
 share/man/man4/stf.4 | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/share/man/man4/stf.4 b/share/man/man4/stf.4
index 7a5e16be56d8..2b794cd2936e 100644
--- a/share/man/man4/stf.4
+++ b/share/man/man4/stf.4
@@ -57,9 +57,9 @@ For ordinary nodes in a 6to4 or 6RD site, you do not need
 interface.
 The
 .Nm
-interface is necessary for site border router
+interface is necessary for site border routers
 (called
-.Dq 6to4 router
+.Dq 6to4 routers
 or
 .Dq 6rd Customer Edge (CE)
 in the specification).
@@ -306,8 +306,6 @@ has a WAN address of 192.0.2.2 and the full IPv4 address is embedded in the
 .Xr gif 4 ,
 .Xr inet 4 ,
 .Xr inet6 4
-.Pp
-.Pa http://www.ipv6day.org/action.php?n=En.IPv6day
 .Rs
 .%A Brian Carpenter
 .%A Keith Moore