DOC: Add datetime.tzinfo to paramater tz in tz_localize and tz_convert (#50742)

add datetime.tzinfo to paramater tz

Author: luke396

pandas/core/arrays/datetimes.py

@@ -803,7 +803,7 @@ def tz_convert(self, tz) -> DatetimeArray:
 
         Parameters
         ----------
-        tz : str, pytz.timezone, dateutil.tz.tzfile or None
+        tz : str, pytz.timezone, dateutil.tz.tzfile, datetime.tzinfo or None
             Time zone for time. Corresponding timestamps would be converted
             to this time zone of the Datetime Array/Index. A `tz` of None will
             convert to UTC and remove the timezone information.
@@ -892,7 +892,7 @@ def tz_localize(
 
         Parameters
         ----------
-        tz : str, pytz.timezone, dateutil.tz.tzfile or None
+        tz : str, pytz.timezone, dateutil.tz.tzfile, datetime.tzinfo or None
             Time zone to convert timestamps to. Passing ``None`` will
             remove the time zone information preserving local time.
         ambiguous : 'infer', 'NaT', bool array, default 'raise'