[docs] Download problems

[Ножкин Игорь]

If you're using 2.7.12rc1 version, you can't download the documentation (
https://docs.python.org/2/archives/python-2.7.12rc1-docs-pdf-letter.zip for
example). For other versions works fine. Could you please fix that?
[image: Встроенное изображение 1]
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