trailing whitespace

Author: csm10495

Doc/whatsnew/3.14.rst

@@ -443,7 +443,7 @@ contextvars
 
 * Support context manager protocol by :class:`contextvars.Token`.
   (Contributed by Andrew Svetlov in :gh:`129889`.)
- 
+
 * Add :meth:`concurrent.futures.ProcessPoolExecutor.terminate_workers` and
   :meth:`concurrent.futures.ProcessPoolExecutor.kill_workers` as
   ways to terminate or kill all living worker processes in the given pool.