Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  8b6e90f3a77a13f7d4ca1ecd42d3624037c9d028

Fix typo in button name

introduced in efcf1fcb5c828ae7404ce404359f5a2e1d71f466

Change-Id: Ie952b7780969394d6c712fc7794c3971a1fb0faf