[issue19504] Change "customise" to "customize".

[Roundup Robot]

Roundup Robot added the comment:

New changeset 579360b1c8fe by Raymond Hettinger in branch '3.5':
Issue 19504:  Change "customise" to "customize" American spelling.
https://hg.python.org/cpython/rev/579360b1c8fe

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<https://bugs.python.org/issue19504>
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