Updated mediawiki/extensions
Project: mediawiki/extensions/WikimediaMaintenance  a9b8904200235293baf5d671cb630d5ebc748a01

Adding Wikivoyage to the list.

This is a minor change, but a great way to advertise the fact that
Wikivoyage is available for new languages to be tested in. Placed
below Wikiversity as in order of launch date.

Change-Id: I0cf32bd2bf66ebcd22f0e5c7d7930d2fa5a7a317