DOC: Update DataFrame.size docstring with numpy.ndarray.size reference

Author: felicijo

pandas/core/generic.py

@@ -665,8 +665,7 @@ def size(self) -> int:
 
         See Also
         --------
-        ndarray.size : Number of elements in the array.
-            (`ndarray.size <https://numpy.org/doc/stable/reference/generated/numpy.ndarray.size.html>`_)
+        numpy.ndarray.size : Number of elements in the array.
 
         Examples
         --------