Fix make_swiss_roll docstring to resolve a copyright ambiguity (scikit-learn#31646)

Author: ogrisel

sklearn/datasets/_samples_generator.py

@@ -1864,6 +1864,8 @@ def make_swiss_roll(n_samples=100, *, noise=0.0, random_state=None, hole=False):
 
     Read more in the :ref:`User Guide <sample_generators>`.
 
+    Adapted with permission from Stephen Marsland's code [1].
+
     Parameters
     ----------
     n_samples : int, default=100