Denote multiple arguments with 'arg ...' not 'args'

A few programs used the plural in their synopsis which doesn't read as
clear as the obvious triple-dot notation.

mdoc(7) .Ar defaults to "file ..." if no arguments are given and consistent
use of 'arg ...' matches that behaviour.

Cleanup a few markups of the same argument so the text keeps reading
naturally;  omit unhelpful parts like 'if optional arguments are given,
they are passed along' for tools like time(1) and timeout(1) that obviously
execute commands with whatever arguments where given -- just like doas(1)
which doesn't mention arguments in its DESCRIPTION in the first place.

For expr(1) the difference between 'expressions' and 'expression ...' is
crucial, as arguments must be passed as individual words.

Feedback millert jmc schwarze deraadt
OK jmc

1 files changed, 4 insertions, 6 deletions

diff --git a/usr.bin/timeout/timeout.1 b/usr.bin/timeout/timeout.1
index 406dd0697cf..d2aab6b81b5 100644
--- a/usr.bin/timeout/timeout.1
+++ b/usr.bin/timeout/timeout.1
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: timeout.1,v 1.3 2021/09/04 11:58:31 schwarze Exp $
+.\"	$OpenBSD: timeout.1,v 1.4 2022/12/22 19:53:23 kn Exp $
 .\"	$NetBSD: timeout.1,v 1.4 2016/10/13 06:22:26 dholland Exp $
 .\"
 .\" Copyright (c) 2014 Baptiste Daroussin <bapt@FreeBSD.org>
@@ -27,7 +27,7 @@
 .\"
 .\" $FreeBSD: head/usr.bin/timeout/timeout.1 268861 2014-07-18 22:56:59Z bapt $
 .\"
-.Dd $Mdocdate: September 4 2021 $
+.Dd $Mdocdate: December 22 2022 $
 .Dt TIMEOUT 1
 .Os
 .Sh NAME
@@ -41,14 +41,12 @@
 .Op Fl -preserve-status
 .Ar duration
 .Ar command
-.Op Ar args
+.Op Ar arg ...
 .Sh DESCRIPTION
 The
 .Nm
 utility executes
-.Ar command ,
-with any
-.Ar args ,
+.Ar command
 and kills it if it is still running after the
 specified
 .Ar duration .