set PropTypes

src/client/js/components/PageComment/Comment.jsx

@@ -287,6 +287,7 @@ Comment.propTypes = {
 
   comment: PropTypes.object.isRequired,
   growiRenderer: PropTypes.object.isRequired,
+  editBtnClicked: PropTypes.func.isRequired,
   deleteBtnClicked: PropTypes.func.isRequired,
   replyList: PropTypes.array,
 };