[models] Improve documentation of config files; Make ptbench config work again

...ch/data/montgomery_shenzhen_indian_padchest/datamodule.py

...bench/data/montgomery_shenzhen_indian_padchest/default.py

...ench/data/montgomery_shenzhen_indian_tbx11k/datamodule.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v1_fold_0.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v1_fold_1.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v1_fold_2.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v1_fold_3.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v1_fold_4.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v1_fold_5.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v1_fold_6.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v1_fold_7.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v1_fold_8.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v1_fold_9.py

...ta/montgomery_shenzhen_indian_tbx11k/v1_healthy_vs_atb.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v2_fold_0.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v2_fold_1.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v2_fold_2.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v2_fold_3.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v2_fold_4.py

...bench/data/montgomery_shenzhen_indian_tbx11k/v2_fold_5.py