Fix an ... interesting pasto in the description of the l length modifier

that's been here forever.

lib/libc/stdio/printf.3

@@ -1,4 +1,4 @@
-.\"	$NetBSD: printf.3,v 1.16 2001/04/03 13:59:22 jhawk Exp $
+.\"	$NetBSD: printf.3,v 1.17 2001/04/26 19:25:12 kleink Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -343,7 +343,7 @@ The optional character
 .Cm x ,
 or
 .Cm X
-conversion applies to a pointer to a
+conversion corresponds to a
 .Em long int
 or
 .Em unsigned long int