Fix obvious bug.

lib/libc/stdlib/imaxabs.3

@@ -1,4 +1,4 @@
-.\"	$NetBSD: imaxabs.3,v 1.2 2010/03/21 13:39:51 jruoho Exp $
+.\"	$NetBSD: imaxabs.3,v 1.3 2011/04/13 06:35:48 jruoho Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -33,7 +33,7 @@
 .\"
 .\"     from: @(#)labs.3	8.1 (Berkeley) 6/4/93
 .\"
-.Dd March 6, 2000
+.Dd April 13, 2011
 .Dt IMAXABS 3
 .Os
 .Sh NAME
@@ -44,7 +44,7 @@
 .Sh SYNOPSIS
 .In inttypes.h
 .Ft intmax_t
-.Fn imaxabs "intmax_t i"
+.Fn imaxabs "intmax_t x"
 .Sh DESCRIPTION
 The
 .Fn imaxabs
@@ -52,7 +52,7 @@ function
 returns the absolute value of the
 .Vt imaxint_t
 integer
-.Ar j .
+.Ar x .
 .Sh SEE ALSO
 .Xr abs 3 ,
 .Xr cabs 3 ,