To ensure our edit review recommender system is as transparent as possible, we could share information with users about why they're seeing a particular edit. What source(s) did we select it from? What were the highest-scoring reasons for it to be prioritised for them?

This needn't be an extremely noticeable feature, it could be behind a menu/click.

Examples
Facebook has a menu for each post, in which users can select "Why am I seeing this post?". The resulting modal explains a little about why this post was shown: