jpath_preprocessing package missing

[dymodi]

jpath_preprocessing
A clear and concise description of what the bug is.

To Reproduce
link: https://cspy.readthedocs.io/en/latest/how_to.html#simple-example
code: from jpath_preprocessing import relabel_source_sink, add_cspy_edge_attributes

Expected behavior
Clear description on how to use the package.

Screenshots
error: ModuleNotFoundError: No module named 'jpath_preprocessing'

[torressa]

Hey @dymodi
The file jpath_preprocessing.py lives in examples/jpath/jpath_preprocessing.py.

However, the callback REF in the notebook and the docs still uses the old syntax so needs updating.
This has already been raised in #68