Try to fix linkcheck error

Author: lauraporta

examples/find_center_of_rotation.py

@@ -23,8 +23,7 @@
 
 This serves only as an illustrative example. To understand how to find the
 center of rotation with real data, please refer to the
-`User guide
-<../user_guide/key_concepts.html#finding-the-center-of-rotation>`_.
+`User guide <../user_guide/key_concepts.html>`_.
 """
 
 # %%