Random change to trigger appveyor test again

Author: Brian Tu

doc/source/whatsnew/v0.21.0.txt

@@ -234,7 +234,7 @@ Other Enhancements
 - :meth:`DataFrame.assign` will preserve the original order of ``**kwargs`` for Python 3.6+ users instead of sorting the column names. (:issue:`14207`)
 - Improved the import time of pandas by about 2.25x.  (:issue:`16764`)
 - :func:`read_json` and :func:`to_json` now accept a ``compression`` argument which allows them to transparently handle compressed files. (:issue:`17798`)
-- :func:`Series.reindex`, :func:`DataFrame.reindex`, :func:`Index.get_indexer` now support list-like argument for ``tolerance``.
+- :func:`Series.reindex`, :func:`DataFrame.reindex`, :func:`Index.get_indexer` now support list-like argument for ``tolerance``
 
 .. _whatsnew_0210.api_breaking: