Increase width in a list.

lib/libc/db/man/btree.3

@@ -1,4 +1,4 @@
-.\"	$NetBSD: btree.3,v 1.9 2003/04/17 18:14:21 wiz Exp $
+.\"	$NetBSD: btree.3,v 1.10 2003/04/17 19:17:48 wiz Exp $
 .\"
 .\" Copyright (c) 1990, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -73,7 +73,7 @@ typedef struct {
 .Ed
 .Pp
 The elements of this structure are as follows:
-.Bl -tag -width xxx
+.Bl -tag -width maxkeypagex
 .It Fa flags
 The flag value is specified by or'ing any of the following values:
 .Bl -tag -width R_DUP -offset indent