git: 6a03eb1f3028 - stable/13 - sh.1: update history + spdx + linter error

The branch stable/13 has been updated by imp:

URL: https://cgit.FreeBSD.org/src/commit/?id=6a03eb1f3028a96a031bf11b2567540b0e9b7f5e

commit 6a03eb1f3028a96a031bf11b2567540b0e9b7f5e
Author:     Alexander Ziaee <concussious@runbox.com>
AuthorDate: 2024-09-29 08:14:36 +0000
Commit:     Warner Losh <imp@FreeBSD.org>
CommitDate: 2024-12-28 18:17:14 +0000

    sh.1: update history + spdx + linter error
    
    + increase history consistency by adding "first appeared"
    + remove a skipped new paragraph macro to quiet linter
    + tag spdx
    
    MFC after:      3 days
    History source: www.in-ulm.de/~mascheck/various/ash/#bsd
    
    Reviewed by: mhorne,imp
    Pull Request: https://github.com/freebsd/freebsd-src/pull/1440
    
    (cherry picked from commit e2a72442bd57c1373c30fab945fbfc86464f3782)
---
 bin/sh/sh.1 | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/bin/sh/sh.1 b/bin/sh/sh.1
index c990a4adb3c0..93504c00aab7 100644
--- a/bin/sh/sh.1
+++ b/bin/sh/sh.1
@@ -1,4 +1,6 @@
 .\"-
+.\" SPDX-License-Identifier: BSD-3-Clause
+.\"
 .\" Copyright (c) 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
 .\"
@@ -1070,7 +1072,6 @@ or the end of the
 command.
 .Ss Grouping Commands Together
 Commands may be grouped by writing either
-.Pp
 .Sm off
 .Bd -literal -offset -ident
 .Po Ar list Pc
@@ -2891,7 +2892,9 @@ This version of
 was rewritten in 1989 under the
 .Bx
 license after the Bourne shell from
-.At V.4 .
+.At V.4
+and first appeared in
+.Bx 4.3 Net/2 .
 .Sh AUTHORS
 This version of
 .Nm