fix: 单位计算

Signed-off-by: MadDogOwner <xiaoran@xrgzs.top>

Author: xrgzs

drivers/139/driver.go

@@ -949,10 +949,13 @@ func (d *Yun139) GetDetails(ctx context.Context) (*model.StorageDetails, error)
 		return nil, err
 	}
 
+	total := detail.Data.DiskSize * utils.MB
+	used := (detail.Data.DiskSize - detail.Data.FreeDiskSize) * utils.MB
+
 	return &model.StorageDetails{
 		DiskUsage: model.DiskUsage{
-			TotalSpace: detail.Data.DiskSize,
-			UsedSpace:  detail.Data.DiskSize - detail.Data.FreeDiskSize,
+			TotalSpace: total,
+			UsedSpace:  used,
 		},
 	}, nil
 }