Updated the example in the duplicated method docstring to use an ArrowExtensionArray

Author: evensong

pandas/core/arrays/arrow/array.py

@@ -1908,7 +1908,7 @@ def duplicated(
 
         Examples
         --------
-        >>> pd.array([1, 1, 2, 3, 3], dtype="Int64").duplicated()
+        >>> pd.array([1, 1, 2, 3, 3], dtype="int64[pyarrow]").duplicated()
         array([False,  True, False, False,  True])
         """
         pa_type = self._pa_array.type