message: Rephrase description for fetch functions
diff: @@ -142,7 +142,7 @@ def _get_archive_path(file_path, label):
  def fetch_spiral_2d(file_path = None):
  """
  - Fetch spiral_2d dataset remotely.
  + Load the spiral_2d dataset.
  Note that if the dataset already exists in the target location, it is not downloaded again,
  and the corresponding array is returned from cache.
  @@ -174,7 +174,7 @@ def fetch_spiral_2d(file_path = None):
  def fetch_bunny(file_path = None, accept_license = False):
  """
  - Fetch Stanford bunny dataset remotely and its LICENSE file.
  + Load the Stanford bunny dataset.
  This dataset contains 35947 vertices.
  