Fix model_maker inline documentation

import random

import yaml

## \brief 3D software generation capability flag.

allow_3d = True

try:

    import pyvista as pv

# `main()` is the function that handles the creation of the code configuration.

# It returns an integer value as exit code, using 0 to signal successful execution.

#

# \returns result: `int` Number of detected error-level inconsistencies.

# \returns result: `int` Exit code (0 = SUCCESS).

def main():

    result = 0

    config = parse_arguments()

## \brief Export the model to a set of OBJ files for 3D visualization.

#

#  This function exports the model as a set of OBJ files (one for every

#  spherical unit, plus a single scene file) to allow for model visualization

#  with 3D software tools.

#  This function exports the model as a single OBJ file, containing the

#  information to visualize the particle with 3D software tools. The model

#  file is associated with a MTL material libray file, used to assign colors

#  to spheres of different type.

#

#  \param scatterer: `dict` Scatterer configuration dictionary (gets modified)

#  \param geometry: `dict` Geometry configuration dictionary (gets modified)