manual.texi UPDATE description mentioned ORDER BY, but it was

manual.texi	missing from the syntax diagram.

Docs/manual.texi

@@ -35016,6 +35016,7 @@ DELAYED} when you are really sure you need it!
 UPDATE [LOW_PRIORITY] [IGNORE] tbl_name
     SET col_name1=expr1 [, col_name2=expr2, ...]
     [WHERE where_definition]
+    [ORDER BY ...]
     [LIMIT #]
 @end example