[docs] [issue37513] Fix a type error in ctypes.rst

[Xiang Zhang]

Xiang Zhang <angwerzx at 126.com> added the comment:


New changeset f6cdd3ff687ebbf8209d793a18a042ea495c4aeb by Xiang Zhang (Hai Shi) in branch 'master':
bpo-37513: Change ValueError to TypeError in an example in ctypes doc (GH-14615)
https://github.com/python/cpython/commit/f6cdd3ff687ebbf8209d793a18a042ea495c4aeb


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