mouse-wheel-up-event doc

[Martin Rudalics]

        * mwheel.el (mouse-wheel-up-event): Doc-string fix.

*** mwheel.el   Sat Nov  5 20:44:34 2005
--- mwheel.el   Thu Feb  9 08:52:52 2006
***************
*** 77,83 ****
        'wheel-down
      (intern (format (if (featurep 'xemacs) "button%s" "mouse-%s")
                    mouse-wheel-up-button)))
!   "Event used for scrolling down."
    :group 'mouse
    :type 'symbol
    :set 'mouse-wheel-change-button)
--- 77,83 ----
        'wheel-down
      (intern (format (if (featurep 'xemacs) "button%s" "mouse-%s")
                    mouse-wheel-up-button)))
!   "Event used for scrolling up."
    :group 'mouse
    :type 'symbol
    :set 'mouse-wheel-change-button)