message: just code, no test
diff: @@ -50,7 +50,7 @@ The cover C comes from the preimages of intervals (10 intervals with gain 0.3)
  covering the height function (coordinate 2),
  which are then refined into their connected components using the triangulation of the .OFF file.
  -.. testcode::
  +.. code-block:: python
  import gudhi
  nerve_complex = gudhi.CoverComplex()
  