Update src/array_api_extra/_lib/_utils/_helpers.py

Author: crusaderky

src/array_api_extra/_lib/_utils/_helpers.py

@@ -408,7 +408,7 @@ def pickle_flatten(
 
     class Pickler(pickle.Pickler):  # numpydoc ignore=GL08
         """
-        Use the `pickle.Pickler.persistent_id` hook to extractt objects.
+        Use the `pickle.Pickler.persistent_id` hook to extract objects.
         """
 
         @override