Fix RST.

Author: alexamici

doc/whats-new.rst

@@ -39,8 +39,8 @@ Breaking changes
   always be set such that ``int64`` values can be used.  In the past, no units
   finer than "seconds" were chosen, which would sometimes mean that ``float64``
   values were required, which would lead to inaccurate I/O round-trips.
-- remove deprecated ``autoclose`` kwargs from :py:func:`open_dataset` (:pull: `4725`).
-  By `Aureliana Barghini <https://github.com/aurghs>`_
+- remove deprecated ``autoclose`` kwargs from :py:func:`open_dataset` (:pull:`4725`).
+  By `Aureliana Barghini <https://github.com/aurghs>`_.
 
 
 New Features