[doc] Reformatted docstrings to proper numpy-style

src/mednet/config/data/hivtb/datamodule.py

src/mednet/config/data/montgomery/datamodule.py

src/mednet/config/data/nih_cxr14/datamodule.py

src/mednet/config/data/padchest/datamodule.py

src/mednet/config/data/shenzhen/datamodule.py

src/mednet/config/data/tbpoc/datamodule.py

src/mednet/config/data/tbx11k/datamodule.py

src/mednet/config/data/tbx11k/make_splits_from_database.py

src/mednet/data/augmentations.py

src/mednet/data/datamodule.py

src/mednet/data/image_utils.py

src/mednet/data/split.py

src/mednet/engine/callbacks.py

src/mednet/engine/device.py

src/mednet/engine/evaluator.py

src/mednet/engine/loggers.py

src/mednet/engine/predictor.py

src/mednet/engine/saliency/completeness.py

src/mednet/engine/saliency/evaluator.py

src/mednet/engine/saliency/generator.py