fix:修改code

src/core/upload.js

@@ -151,7 +151,7 @@ class Upload {
     if (!string) return success();
     const params = {
       accessTypeEnum: "PUBLIC",
-      bizCode: 'CLOUD_CLASS_COMMON',
+      bizCode: 'CLOUD_CLASS_COURSE',
       instId: User.getStoreId(),
       resourceName: name,
     }