Issue #19504: Used American spelling for 'customize'.
diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst
index 9045acf..f3fda14 100644
--- a/Doc/library/logging.rst
+++ b/Doc/library/logging.rst
@@ -727,8 +727,8 @@
Return either the standard :class:`Logger` class, or the last class passed to
:func:`setLoggerClass`. This function may be called from within a new class
- definition, to ensure that installing a customised :class:`Logger` class will
- not undo customisations already applied by other code. For example::
+ definition, to ensure that installing a customized :class:`Logger` class will
+ not undo customizations already applied by other code. For example::
class MyLogger(logging.getLoggerClass()):
# ... override behaviour here