message: fix sphinx test for rips
diff: @@ -11,7 +11,6 @@ Example of gradient computed from Vietoris-Rips persistence
  -----------------------------------------------------------
  .. testsetup::
  - :hide:
  import numpy
  numpy.set_printoptions(precision=4)
  @@ -30,6 +29,9 @@ Example of gradient computed from Vietoris-Rips persistence
  grads = tape.gradient(loss, [X])
  print(grads[0].numpy())
  +.. testcleanup::
  + numpy.set_printoptions(precision=8)
  +
  .. testoutput::
  [[-0.5 -0.5]
  