Merge pull request nus-cs2103-AY2021S1#80 from khor-jingqian/fix-github-pages

Fix Github pages

Author: nicholasyeo

docs/UserGuide.md

@@ -7,6 +7,7 @@ title: User Guide
 * Table of Contents
 {:toc}
 
+------------------------------------------------------------------------------------------------------------------------
 ## 1. Introduction
 
 fitNUS is tailored for **NUS students** that are interested in staying healthy and keeping fit. It is suitable for **all