wdired-use-dired-vertical-movement docstring improvements

["Chris Moore" <christopher.ian.moore@gmail.com>]

`sometimes' is missing its closing quote, and the docstring talks
about "if `track-eol' is honored" - well, isn't it always honored,
like all variables are?  Here's a patch.  Note that the docstring
still isn't quite right, because track-eol seems to have no effect on
the behavior.  Well, I have it set to the default 'nil' and
`sometimes' still works for me.

Chris.

*** a/wdired.el	Mon Nov  5 10:51:32 2007
--- b/wdired.el	Mon Nov  5 10:52:21 2007
***************
*** 130,137 ****
    "If t, the \"up\" and \"down\" movement works as in Dired mode.
  That is, always move the point to the beginning of the filename at line.

! If `sometimes, only move to the beginning of filename if the point is
! before it, and `track-eol' is honored.  This behavior is very handy
  when editing several filenames.

  If nil, \"up\" and \"down\" movement is done as in any other buffer."
--- 130,137 ----
    "If t, the \"up\" and \"down\" movement works as in Dired mode.
  That is, always move the point to the beginning of the filename at line.

! If `sometimes', only move to the beginning of filename if the point is
! before it, and `track-eol' is non-nil.  This behavior is very handy
  when editing several filenames.

  If nil, \"up\" and \"down\" movement is done as in any other buffer."