Oops, wrong issue number in the changelog

Author: nedbat

CHANGES.rst

@@ -36,15 +36,15 @@ Version 5.1 --- 2020-04-12
   Salvatore Zagaria.
 
 - On Python 3.8, try-finally-return reported wrong branch coverage with
-  decorated async functions (`issue 946`_).  This is now fixed. Thanks, Kjell
+  decorated async functions (`issue 964`_).  This is now fixed. Thanks, Kjell
   Braden.
 
 - The :meth:`~coverage.Coverage.get_option` and
   :meth:`~coverage.Coverage.set_option` methods can now manipulate the
   ``[paths]`` configuration setting.  Thanks to Bernát Gábor for the fix for
   `issue 967`_.
 
-.. _issue 946: https://github.com/nedbat/coveragepy/issues/946
+.. _issue 964: https://github.com/nedbat/coveragepy/issues/964
 .. _issue 967: https://github.com/nedbat/coveragepy/issues/967