Avoid :param: for Google-style docstrings
Avoid :param: for Google-style docstrings

By settings this options, a "Parameters" section in a Google-style
docstrings is formatted exactly like other sections (e.g.
"Attributes"). The ':param:' role is no longer used. This improves
consistent formatting. Also, we now have more flexibility in specifying
parameter types ('list of :obj:`Ket`'). However, we lose
auto-linkification.

mabuchilab/QNET