Results 2 issues of AndrewYq

https://github.com/datawhalechina/torch-rechub/blob/main/torch_rechub/utils/data.py中get_auto_embedding_dim的np.floor(6 * np.pow(num_classes, 0.26))应该改成np.floor(6 * np.pow(num_classes, 0.25))吧。