I hope you're not accidentally revealing reviewer names with that screenshot!
I was going to suggest editing the comments in the pop-up, but the review is closed, which disallows editors and reviewers both from editing comments. At this point, to make the review visible to the Author, you'd have to go into the database. (If you'd like to pursue this, I can provide instructions.)
However, you can work around this as follows: when, as Editor, you Notify Author, you'll be taken to a page where you can compose an email to the Author containing the editorial decision. There's a button to allow you to import the reviews; this won't contain the comments by the reviewer in question, but you can paste them in at this point.
I'll point your situation out to the team for possible attention in a future release.
Open Journal Systems Team