[Twisted-Python] twistedmatrix.com minor correction

[Justin Johnson]

At http://twistedmatrix.com/products/download. the 1.07 alpha is listed,
but the info below refers to 1.06 which already released.


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Twisted 1.0.7alpha4 - Release Candidate

This is an Alpha of Twisted. It is not an official release: there may be
a number of alphas and RCs before *1.0.6* is considered a candidate for
full release. Until then, use this in production at your own risk. If you
want the latest stable release of Twisted, see Twisted 1.0.6, below.