Updated mediawiki/extensions
Project: mediawiki/extensions/CreditsSource  c20064d1a9b45ac876cdcda64e15454ccaf9ed32

Tweak 'creditssource-source-work'

Loosely based on spot by Shirayuki in
https://translatewiki.net/wiki/Thread:Support/About_MediaWiki:Creditssource-source-work/en

Change-Id: I05087b8dfce4bb4dc083486c626c808e9ff695df