📝 add Series.to_markdown to whatsnew

Author: Marco Gorelli

doc/source/whatsnew/v1.0.0.rst

@@ -207,7 +207,7 @@ Other enhancements
 - The ``partition_cols`` argument in :meth:`DataFrame.to_parquet` now accepts a string (:issue:`27117`)
 - :func:`to_parquet` now appropriately handles the ``schema`` argument for user defined schemas in the pyarrow engine. (:issue: `30270`)
 - DataFrame constructor preserve `ExtensionArray` dtype with `ExtensionArray` (:issue:`11363`)
-- :meth:`DataFrame.to_markdown` added (:issue:`11052`)
+- :meth:`DataFrame.to_markdown` and :meth:`Series.to_markdown` added (:issue:`11052`)
 
 
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