fix duplicated

Author: athimma2

ci/code_checks.sh

@@ -175,7 +175,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         -i "pandas.Timestamp.tzinfo GL08" \
         -i "pandas.Timestamp.value GL08" \
         -i "pandas.Timestamp.year GL08" \
-        -i "pandas.api.extensions.ExtensionArray.duplicated RT03,SA01" \
         -i "pandas.api.extensions.ExtensionArray.fillna SA01" \
         -i "pandas.api.extensions.ExtensionArray.insert PR07,RT03,SA01" \
         -i "pandas.api.extensions.ExtensionArray.interpolate PR01,SA01" \

pandas/core/arrays/base.py

@@ -1220,6 +1220,15 @@ def duplicated(
         Returns
         -------
         ndarray[bool]
+            With true in indices where elements are duplicated and false otherwise.
+
+        See Also
+        --------
+        DataFrame.duplicated : Return boolean Series denoting
+            duplicate rows.
+        Series.duplicated : Indicate duplicate Series values.
+        api.extensions.ExtensionArray.unique : Compute the ExtensionArray
+            of unique values.
 
         Examples
         --------