Fix UG formatting

docs/UserGuide.md

@@ -22,7 +22,8 @@ professionals manage their patients' medical journey.
 4. Double-click the file to start the app. The GUI similar to the below should appear in a few seconds.
    ![Ui](images/Ui.png)
 5. For Mac users encountering this issue, follow this [guide](https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/Run-JAR-file-example-windows-linux-ubuntu).
-   <img width="275" height="280" src="images/mac_issue.png">
+
+<img width="275" height="280" src="images/mac_issue.png">
 6. Type the command in the command box and press Enter to execute it.
    e.g. typing `help` and pressing Enter will open the help window.
    Some example commands you can try: