fixed trailing whitespace

Author: jacobaustin123

doc/source/whatsnew/v1.1.0.rst

@@ -44,7 +44,7 @@ Sorting with keys
 We've added a ``key`` argument to the DataFrame and Series sorting methods, including
 :meth:`DataFrame.sort_values`, :meth:`DataFrame.sort_index`, :meth:`Series.sort_values`,
 and :meth:`Series.sort_index`. The ``key`` can be any callable function which is applied
-column-by-column to each column used for sorting, before sorting is performed (:issue:`27237`). 
+column-by-column to each column used for sorting, before sorting is performed (:issue:`27237`).
 See :ref:`sort_values with keys <basics.sort_value_key>` and :ref:`sort_index with keys
 <basics.sort_index_key>` for more information.
 
@@ -54,7 +54,7 @@ See :ref:`sort_values with keys <basics.sort_value_key>` and :ref:`sort_index wi
    s.sort_values()
 
 
-Note how this is sorted with capital letters first. If we apply the :meth:`Series.str.lower` 
+Note how this is sorted with capital letters first. If we apply the :meth:`Series.str.lower`
 method, we get
 
 .. ipython:: python