`char-before' doc fix

[Ben North]

I think there is a small error in the Emacs Lisp Reference Manual for
`char-before', fixed by:

--- ORIG--text.texi     2003-04-04 11:26:05.000000000 +0100
+++ text.texi   2003-04-04 11:27:13.000000000 +0100
@@ -89,7 +89,7 @@
 @defun char-before &optional position
 This function returns the character in the current buffer immediately
 before position @var{position}.  If @var{position} is out of range for
-this purpose, either before the beginning of the buffer, or at or beyond
+this purpose, either at or before the beginning of the buffer, or beyond
 the end, then the value is @code{nil}.  The default for
 @var{position} is point.
 @end defun