DOC - Removed superfluous 'dict' from Series.map argument description

DOC - Added issue number for tests of Series.map with abc.Mapping argument

Author: ohad83

pandas/core/series.py

@@ -3618,7 +3618,7 @@ def map(self, arg, na_action=None):
 
         Parameters
         ----------
-        arg : function, dict, colletions.abc.Mapping subclass or Series
+        arg : function, colletions.abc.Mapping subclass or Series
             Mapping correspondence.
         na_action : {None, 'ignore'}, default None
             If 'ignore', propagate NaN values, without passing them to the

pandas/tests/series/test_apply.py

@@ -610,6 +610,8 @@ class DictWithoutMissing(dict):
         tm.assert_series_equal(result, expected)
 
     def test_map_abc_mapping(self):
+        # https://github.com/pandas-dev/pandas/issues/29733
+        # Check collections.abc.Mapping support as mapper for Series.map
         class NonDictMapping(abc.Mapping):
             def __init__(self):
                 self._data = {3: "three"}
@@ -630,6 +632,8 @@ def __len__(self):
         tm.assert_series_equal(result, expected)
 
     def test_map_abc_mapping_with_missing(self):
+        # https://github.com/pandas-dev/pandas/issues/29733
+        # Check collections.abc.Mapping support as mapper for Series.map
         class NonDictMappingWithMissing(abc.Mapping):
             def __init__(self):
                 self._data = {3: "three"}