Update documentation to reflect reality - "userdel -p" replaces the login

shell with /sbin/nologin, rather than /usr/bin/false.

usr.sbin/user/userdel.8

@@ -1,4 +1,4 @@
-.\" $NetBSD: userdel.8,v 1.10 2001/06/05 11:31:22 wiz Exp $ */
+.\" $NetBSD: userdel.8,v 1.11 2001/10/16 08:17:07 agc Exp $ */
 .\"
 .\"
 .\" Copyright (c) 1999 Alistair G. Crooks.  All rights reserved.
@@ -80,7 +80,7 @@ password to an
 .Dq impossible
 one, and by setting the
 user's shell to the 
-.Xr false 1
+.Xr nologin 8
 program. This option can be helpful in preserving a user's
 files for later use by members of that person's
 group after the user has moved on.
@@ -116,7 +116,7 @@ utility exits 0 on success, and >0 if an error occurs.
 .It Pa /etc/usermgmt.conf
 .El
 .Sh SEE ALSO
-.Xr false 1 ,
+.Xr nologin 8 ,
 .Xr passwd 5 ,
 .Xr pwd_mkdb 8
 .Sh HISTORY