graph2: Changed addComment error message on can-comment check to be consistent with others.

graph2/queries/comment.go

@@ -39,7 +39,7 @@ func (r *mutationResolver) AddComment(ctx context.Context, input input.CommentAd
 	}
 
 	if !chapter.CanComment() {
-		return models.Comment{}, errors.New("You cannot comment on this chapter")
+		return models.Comment{}, errors.New("Comments are disabled or locked")
 	}
 
 	var characterPtr *models.Character