fix course updates
fix course updates

XiaodunServerGroup/xiaodun-platform,XiaodunServerGroup/xiaodun-platform,altsen/diandiyun-platform,hwjworld/xiaodun-platform,XiaodunServerGroup/medicalmooc,XiaodunServerGroup/medicalmooc,liuqr/edx-xiaodun,XiaodunServerGroup/xiaodun-platform,liuqr/edx-xiaodun,hwjworld/xiaodun-platform,altsen/diandiyun-platform,XiaodunServerGroup/medicalmooc,XiaodunServerGroup/xiaodun-platform,altsen/diandiyun-platform,liuqr/edx-xiaodun,XiaodunServerGroup/medicalmooc,XiaodunServerGroup/xiaodun-platform,XiaodunServerGroup/xiaodun-platform,hwjworld/xiaodun-platform,hwjworld/xiaodun-platform,XiaodunServerGroup/medicalmooc,altsen/diandiyun-platform,liuqr/edx-xiaodun