Updated mediawiki/extensions
Project: mediawiki/extensions/Renameuser  baa8a6687aa15b72044eb3c6ec41036614a0666f

CamelCase for the special page name

That's how the page's name actually appears in English,
and this was fixed in the English Wikipedia.

Change-Id: I401d40039d12662e61dc7178fa1468d59f71c5ba