Close #14248: fix typo.

Doc/whatsnew/3.3.rst

@@ -475,7 +475,7 @@ Some smaller changes made to the core Python language are:
   (:issue:`12170`)
 
 * A dict lookup now raises a :exc:`RuntimeError` if the dict is modified during
-  the lookup. If you implement your own comparaison function for objects used
+  the lookup. If you implement your own comparison function for objects used
   as dict keys and the dict is shared by multiple threads, access to the dict
   should be protected by a lock.