Updated series documentation to close #35406 (#36139)

Author: Thomas Dickson

pandas/core/series.py

@@ -164,9 +164,9 @@ class Series(base.IndexOpsMixin, generic.NDFrame):
     index : array-like or Index (1d)
         Values must be hashable and have the same length as `data`.
         Non-unique index values are allowed. Will default to
-        RangeIndex (0, 1, 2, ..., n) if not provided. If both a dict and index
-        sequence are used, the index will override the keys found in the
-        dict.
+        RangeIndex (0, 1, 2, ..., n) if not provided. If data is dict-like
+        and index is None, then the values in the index are used to
+        reindex the Series after it is created using the keys in the data.
     dtype : str, numpy.dtype, or ExtensionDtype, optional
         Data type for the output Series. If not specified, this will be
         inferred from `data`.