The approve-tag-wiki-edits page states that users need 5k reputation to approve tag wiki edits. However, there seems to be no way to see the list of suggested edits. The
/review/suggested-edits page only shows a 404 Not Found error. Apparently, only users with 10k who have access to moderator tools can see the suggested edits.
I have experienced this on tex.sx where I have over 5k reputation, but I assume it is so on all Stack Exchange sites and Stack Overflow.