change the import module names since the script names changed

...diction_savp/HPC_scripts/data_extraction_era5_template.sh

video_prediction_savp/env_setup/create_env.sh

video_prediction_savp/utils/prepare_era5_data.py

video_prediction_savp/utils/process_netCDF_v2.py

video_prediction_savp/video_prediction/datasets/__init__.py

...prediction_savp/video_prediction/datasets/era5_dataset.py