javipus

Upgrade stan code in docs to 3.0.2

1

**Describe the bug** The stan code in [this example notebook](https://github.com/arviz-devs/arviz/blob/main/doc/source/getting_started/CreatingInferenceData.ipynb) included in the docs does not work with v3.0.2 for several reasons: 1. The library should now be imported as...

The command `python src/data_util/generate_hol_dataset.py data/hol_raw_data data/hol_data` throws an error because the path `data/hol_raw_data` does not exist. The only way I got it to work was `python src/data_util/generate_hol_dataset.py data/raw_data data/hol_data`.