Copy changes.

cms/templates/emails/course_creator_granted.txt

 <%! from django.utils.translation import ugettext as _ %>
 
-${_("Your request for course creation rights to edX Studio have been granted! To create your first course, visit:")}
+${_("Your request for course creation rights to edX Studio have been granted. To create your first course, visit:")}
 
 % if is_secure:
 https://${ site }

cms/templates/emails/course_creator_revoked.txt

 <%! from django.utils.translation import ugettext as _ %>
 
-${_("Your request for course creation rights to edX Studio have been revoked. If you believe this was in error, please contact: ")}
+${_("Your course creation rights to edX Studio have been revoked. If you believe this was in error, please contact: ")}
 
 ${ studio_request_email }