message: small correction for documentation
diff: @@ -45,7 +45,7 @@ class SOAP(Descriptor):
  periodic (bool): Determines whether the system is considered to be
  periodic.
  rcut (float): A cutoff for local region.
  - nmax (int): The number of basis to be used for each l.
  + nmax (int): The number of basis functions to be used.
  lmax (int): The number of l's to be used.
  crossover (bool): Default True, if crossover of atoms should be included.
  average (bool): Whether to build an average output for all selected
  