@air, @TrevorArchibald, @HDE226868, So this is the current guidance on reviewing suggested edits. The TL;DR version is if the edit introduces any improvement then to go ahead and approve.
In that particular case, it looks like Peter made a mistake and missed removing the trailing formatting. Normally, he's much better about catching all of those things.
I think the better option would have been to select "Improve Edit" and remove the trailing formatting. Especially since he explained what LFS was, expanded out `yr` into year, and got rid of the thanks at the end.