nanshe/synthetic_data/synthetic_data.py: Add example of `generate_hypersphere_masks` with `include_boundary` as `True`.
nanshe/synthetic_data/synthetic_data.py: Add example of `generate_hypersphere_masks` with `include_boundary` as `True`.

DudLab/nanshe,nanshe-org/nanshe,DudLab/nanshe,jakirkham/nanshe,nanshe-org/nanshe,jakirkham/nanshe