Corrected package name

toolboxes/STLtoVoxel/README.rst

@@ -20,7 +20,7 @@ This package was created as part of the `Google Summer of Code <https://summerof
 Package contents
 ================
 
-* ``STLtoVoxel.py`` is the main script which should be executed to convert a STL file to a voxelised mesh which is saved as a geometry file in HDF5 format suitable for directly importing into gprMax.
+* ``stltovoxel.py`` is the main script which should be executed to convert a STL file to a voxelised mesh which is saved as a geometry file in HDF5 format suitable for directly importing into gprMax.
 * ``examples`` is a folder containing example STL files as well as gprMax input files that can be used to import the resulting HDF5 geometry files.
 * ``convert.py``, ``perimeter.py``, ``slice.py`` are modules adapted from the `stl-to-voxel <https://github.com/cpederkoff/stl-to-voxel>`_ Python library by Christian Pederkoff.
 * ``license.md`` is the license for the `stl-to-voxel <https://github.com/cpederkoff/stl-to-voxel>`_ Python library by Christian Pederkoff.