New wgArticleFeedbackv5SpecialWatchlistUrl value

Old value, l10n and site config specific:
	/wiki/Special:ArticleFeedbackv5Watchlist
	or
	/index.php?title=Special:ArticleFeedbackv5Watchlist

New value, only l10n specific:
	Special:ArticleFeedbackv5Watchlist

This suggestion occured on bug 43384.

Follow-up for Ica66048ab199f27afe2577aa628696c0d06b70b9

Change-Id: Idf808a454995c8ca9977eb5472ae771739cd5cc5
Merge "New wgArticleFeedbackv5SpecialWatchlistUrl value"