Suggestion about PyTorch version

[chang-zy]

The author did not mention it in requirement.txt, but after testing, you had better use torch2.0 and the torchtext of the corresponding version.

作者在requirement.txt中没有讲，但经过测试，pytorch2.0以及对应的torchtext版本是必须的。

[chang-zy]

Or you can refer to the environment.yml for more version details