message: Specify in doc the use of cache when fetching datasets with wrapping functions
diff: @@ -143,6 +143,8 @@ def _get_archive_path(file_path, label):
  def fetch_spiral_2d(file_path = None):
  """
  Fetch spiral_2d dataset remotely.
  + Note that if the dataset already exists in the target location, it is not downloaded again,
  + and the corresponding array is returned from cache.
  Parameters
  ----------
  @@ -169,6 +171,8 @@ def fetch_bunny(file_path = None, accept_license = False):
  """
  Fetch Stanford bunny dataset remotely and its LICENSE file.
  This dataset contains 35947 vertices.
  + Note that if the dataset already exists in the target location, it is not downloaded again,
  + and the corresponding array is returned from cache.
  Parameters
  ----------
  