Updated mediawiki/extensions
Project: mediawiki/extensions/PageBlock  b6b0bdfc6886a8670891edc385053b43f7471e78

Fix typo

Follow up to I9241a852285c152283c2e61b7faf3a62e850cf28

Change-Id: Id95f139023a9ca29ac165b3d0c197e3d857b5dd4