Fix typo in name of private function

Lib/concurrent/futures/process.py

@@ -169,7 +169,7 @@ def _add_call_item_to_queue(pending_work_items,
                 del pending_work_items[work_id]
                 continue
 
-def _queue_manangement_worker(executor_reference,
+def _queue_management_worker(executor_reference,
                              processes,
                              pending_work_items,
                              work_ids_queue,
@@ -302,7 +302,7 @@ class ProcessPoolExecutor(_base.Executor):
             q.put(None)
         if self._queue_management_thread is None:
             self._queue_management_thread = threading.Thread(
-                    target=_queue_manangement_worker,
+                    target=_queue_management_worker,
                     args=(weakref.ref(self, weakref_cb),
                           self._processes,
                           self._pending_work_items,