Wording Change

I have searched the forums for the answer, but could not find it.

I know this might be considered a 'customization' - BUT - we just purchased EasyDiscuss but my boss wants me to change the wording of 'favourites' to the American spelling: 'favorites'.
I cannot find in the system where to do this. I'm sure there are a couple of things to edit.
If I can change the value of COM_EASYDISCUSS_PROFILE_FAVOURITES then everytime the system uses <?php echo JText::_('COM_EASYDISCUSS_PROFILE_FAVOURITES'); ?> it should display the different title, correct?

Thanks in advance for your reply.