Link to github page wrong

[nerdoc]

On http://www.ethdocs.org/en/latest/ethereum-clients/parity/index.html#parity, there is a link to https://github.com/ethcore/parity, which is old and says "Moved to https://github.com/paritytech/parity".
The link should be updated in the docs.
Funnily, the ethdocs.org page says "latest" version, and the "Edit on github" link points to https://github.com/ethereum/homestead-guide/blob/master/source/ethereum-clients/parity/index.rst which has the right link.

I think that updating the docs from the github sources should suffice to fix this?