Issue #19504: Used American spelling for 'customize'.
diff --git a/Doc/library/logging.handlers.rst b/Doc/library/logging.handlers.rst
index 81addb3..d0dc572 100644
--- a/Doc/library/logging.handlers.rst
+++ b/Doc/library/logging.handlers.rst
@@ -892,7 +892,7 @@
 
       Enqueues the record on the queue using ``put_nowait()``; you may
       want to override this if you want to use blocking behaviour, or a
-      timeout, or a customised queue implementation.
+      timeout, or a customized queue implementation.