[Pharo-project] Change Log link

[☈king]

The link under "Change Log" on
  http://www.pharo-project.org/pharo-download/beta-2-0
points to:
  http://code.google.com/p/pharo/wiki/ActionsInPharo2  (a 404)
Should be:
  http://code.google.com/p/pharo/wiki/ActionsInPharo20  (I think)

Thanks!
—☈