[latin1-display] docstring fix

[Jesper Harder]

In GNU Emacs 21.3.50.68 (i686-pc-linux-gnu, GTK+ Version 2.0.2)

A docstring typo in `latin1-display' (of -> or):

diff -c /home/harder/emacs/lisp/international/latin1-disp.el.\~1.15.\~ 
/home/harder/emacs/lisp/international/latin1-disp.el
*** /home/harder/emacs/lisp/international/latin1-disp.el.~1.15.~        Mon Sep 
 1 22:29:03 2003
--- /home/harder/emacs/lisp/international/latin1-disp.el        Fri Nov 14 
01:07:42 2003
***************
*** 84,90 ****
  charsets if you don't have a Unicode font with which to display them.
  
  Setting this variable directly does not take effect;
! use either M-x customize of the function `latin1-display'."
    :group 'latin1-display
    :type 'boolean
    :require 'latin1-disp
--- 84,90 ----
  charsets if you don't have a Unicode font with which to display them.
  
  Setting this variable directly does not take effect;
! use either \\[customize] or the function `latin1-display'."
    :group 'latin1-display
    :type 'boolean
    :require 'latin1-disp