Updated mediawiki/extensions
Project: mediawiki/extensions/Parsoid  f4a641f0291bca28c4eca8788d30df7f9609f503

Make sure the request is closed for /

Requests to / were not properly ended with res.end(), which caused clients to
hang and monitoring to fail.

Change-Id: Ibda22fb531e4d107a1ac677a9ff7b8875c474290