Test Accuracy in the log.txt

Thank you for your unselfish sharing and nice work.

I noticed that the test accuracy writed in log.txt is as

`fp.write(f'[Run {run}, Task {task_id}, Epoch {epoch}] [Test] Accuracy : {total_acc: {5}.{4}}' + '\n')`

But the total_acc is the valid accuracy while test_acc / cnt is the correct one.