fix build

Author: AlexWaygood

Doc/whatsnew/3.12.rst

@@ -1315,7 +1315,7 @@ Deprecated
   it was :exc:`ImportWarning`).
   (Contributed by Brett Cannon in :gh:`65961`.)
 
-* Setting :attr:`~module.__package__`` or :attr:`~module.__cached__` on a
+* Setting :attr:`~module.__package__` or :attr:`~module.__cached__` on a
   module is deprecated, and will cease to be set or taken into consideration by
   the import system in Python 3.14. (Contributed by Brett Cannon in :gh:`65961`.)