Updated mediawiki/extensions
Project: mediawiki/extensions/ProofreadPage  0342c7e40c6812cabe01d72eb9d863989734e838

(bug 50154) The parameter of the header template should be in lower case

This fix the break of the automatic header template feature.

Change-Id: Ib2a254b7117b809a101d38f5c311ca41bb57a9ff