[Cython] http://docs.cython.org/dev/

[Stefan Behnel]

Hi,

I set up a redirect from

http://docs.cython.org/dev/

to the latest docs page built by Jenkins. Certainly easier to remember than
the lengthy real URL.

If anyone has a good idea where to show that link in the original
(released) documentation, or how to make Sphinx insert it for us, I'd be
happy to hear about it. A pull request would be well appreciated. :)

Stefan