fix h5 for timestamp change (#880)

zhaomingwork

2023-08-21 ca0ada5915b4c71fc4a30db689e0e3646181aebf

 egs/aishell/transformer/utils/prepare_checkpoint.py

@@ -16,3 +16,4 @@
    except BaseException:
        raise BaseException(f"Please download pretrain model from ModelScope firstly.")
    shutil.copy(os.path.join(checkpoint_dir, checkpoint_name), os.path.join(pretrained_model_path, "model.pb"))
    shutil.copy(os.path.join(checkpoint_dir, "config.yaml"), os.path.join(pretrained_model_path, "config.yaml"))