Updated sphinx documentation. Changed some function docstrings

config/config_modspa.json

docs/build/doctrees/environment.pickle

docs/build/doctrees/index.doctree

docs/build/doctrees/inputs/input_preparation.doctree

docs/build/doctrees/inputs/ndvi_cube.doctree

docs/build/doctrees/inputs/samir_params.doctree

docs/build/doctrees/samir/data_and_ram_management.doctree

docs/build/doctrees/samir/run_samir.doctree

docs/build/doctrees/setup/conda_env.doctree

docs/build/doctrees/setup/json_config_file.doctree

docs/build/doctrees/setup/setup.doctree

docs/build/html/.buildinfo

docs/build/html/_modules/index.html

...uild/html/_modules/modspa_pixel/input/calculate_ndvi.html

docs/build/html/_modules/modspa_pixel/input/download_S2.html

.../_modules/modspa_pixel/parameters/params_samir_class.html

docs/build/html/_sources/index.rst.txt

docs/build/html/_sources/inputs/input_preparation.rst.txt

docs/build/html/_sources/inputs/ndvi_cube.rst.txt

docs/build/html/_sources/inputs/samir_params.rst.txt