Changes: fix misplaced bug fix

git-svn-id: http://caml.inria.fr/svn/ocaml/version/4.02@14911 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
fix minor typos in Changes

git-svn-id: http://caml.inria.fr/svn/ocaml/version/4.02@14912 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02