Update potentials.rst

docs/source/potentials.rst

@@ -38,7 +38,7 @@ The ``Potential`` (``Poten``) block used to specify a PEF, has the following gen
       ...
       end
 
-For an example, see `h2s_step1.inp <input/h2s_step1.inp>`_  where this PES is used.  
+For an example, see `h2s_step1.inp <file:///input/h2s_step1.inp>`_  where this PES is used.  
 
 Here ``NPARAM`` is used to specify the number of parameters used to define the PES. ``POT_TYPE`` is the name of the potential energy surface being used which is defined in the ``pot_*.f90 file``. The keywords ``COEFF`` indicates if the potential contains a list of parameter values (``LIST``) or  values with the corresponding expansion powers (``POWERS``), e.g. (for H\ :sub:`2`\ CO):
 ::