[docs] [issue27455] Fix tkinter examples to be PEP8 compliant

[SilentGhost]

SilentGhost added the comment:

This patch is going to be rejected, camelCase is standard convention in tkinter and logging modules and that's why it is used in documentation as well.

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nosy: +SilentGhost

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<http://bugs.python.org/issue27455>
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