Updated mediawiki/extensions
Project: mediawiki/extensions/DataValues  4e3c337044b9eef5f6141f591286c3f4189e81e9

(hotfix) fix call to adaptLetterCase method

- this was causing fatals in the sitelinks UI

Change-Id: I9dd895d2d92015ebee7689199d64d00b434e02a4