Update index.tsx

Author: yfblock

web/src/components/ClassRoomRank/index.tsx

@@ -154,7 +154,7 @@ const ClassRoomRank = (props: IProps) => {
               最新数据更新时间:
               {props.latestUpdatedAt && (
                 <span style={{ marginLeft: 10, fontWeight: 'bold' }}>
-                  {dayjs(props.latestUpdatedAt).format('YYYY-MM-DD HH:mm::ss')}
+                  {dayjs(props.latestUpdatedAt).format('YYYY-MM-DD HH:mm:ss')}
                 </span>
               )}
             </span>