DOC: Enforce Numpy Docstring Validation for pandas.DatetimeTZDtype.tz (pandas-dev#58401)

* DOC: add SA01 to pandas.DatetimeTZDtype.tz

* DOC: remove pandas.DatetimeTZDtype.tz

Author: tuhinsharma121

ci/code_checks.sh

@@ -105,7 +105,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         -i "pandas.DatetimeIndex.to_period RT03" \
         -i "pandas.DatetimeIndex.to_pydatetime RT03,SA01" \
         -i "pandas.DatetimeTZDtype SA01" \
-        -i "pandas.DatetimeTZDtype.tz SA01" \
         -i "pandas.Grouper PR02" \
         -i "pandas.Index PR07" \
         -i "pandas.Index.append PR07,RT03,SA01" \

pandas/core/dtypes/dtypes.py

@@ -811,6 +811,10 @@ def tz(self) -> tzinfo:
         """
         The timezone.
 
+        See Also
+        --------
+        DatetimeTZDtype.unit : Retrieves precision of the datetime data.
+
         Examples
         --------
         >>> from zoneinfo import ZoneInfo