Fix last change.

src/buffer.c

@@ -4464,7 +4464,7 @@ Each buffer has its own value of this variable.");
   DEFVAR_PER_BUFFER ("auto-fill-function", &current_buffer->auto_fill_function,
 		     Qnil,
     "Function called (if non-nil) to perform auto-fill.\n\
-It is called after self-inserting any character specified in
+It is called after self-inserting any character specified in\n\
 the `auto-fill-chars' table.\n\
 Each buffer has its own value of this variable.\n\
 NOTE: This variable is not a hook;\n\