message: Mention SciPy version in the doc
diff: @@ -391,7 +391,7 @@ The :doc:`persistence graphical tools </persistence_graphical_tools_user>` and
  mathematics, science, and engineering.
  :class:`~gudhi.point_cloud.knn.KNearestNeighbors` can use the Python package
  -`SciPy <http://scipy.org>`_ as a backend if explicitly requested.
  +`SciPy <http://scipy.org>`_ :math:`\geq` 1.6.0 as a backend if explicitly requested.
  TensorFlow
  ----------
  