Updated mediawiki/extensions
Project: mediawiki/extensions/Translate  295b6c51374dff0b42fc36b15b1f46e2a372f7c6

Change "description" to "documentation"

The former confused some users and made them add something resembling an
edit summary. Was reported by Nemo in
https://translatewiki.net/wiki/Thread:Translation_UX_feedback/%22Add_description%22_confuses_users

Change-Id: I27d319741d5336adfc5366f2e1fdee4fef4754c6