Actually add commented_by in right place

ee/lib/ee/api/entities/merge_request_approval_state_rule.rb

@@ -7,6 +7,8 @@ module EE
         expose :code_owner
         expose :approved_approvers, as: :approved_by, using: ::API::Entities::UserBasic
         expose :approved?, as: :approved
+
+        expose :approved_approvers, as: :commented_by, using: ::API::Entities::UserBasic
       end
     end
   end