Code refactoring

Author: BobsProgrammingAcademy

frontend/src/components/Testimonials.js

@@ -1,5 +1,7 @@
 import { useState, useEffect } from 'react';
 import axios from 'axios';
+
+// Material UI
 import Avatar from '@mui/material/Avatar';
 import Box from '@mui/material/Box';
 import Card from '@mui/material/Card';