fix 虚拟课程

zhongzheng-system/src/main/resources/mapper/modules/goods/GoodsCourseMapper.xml

@@ -73,7 +73,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         m.category_name,
         cs.subject_name,
                gc.sort as g_sort,
-        gc.course_show
+        c.course_show
         FROM
         goods_course gc
         LEFT JOIN course c ON gc.course_id = c.course_id