Свойство list-style-image

list-style-image: none | url('адрес');

<!DOCTYPE html>
<html lang='ru'>
<head>
<meta charset='UTF-8'>
<meta name='viewport' content='width=device-width, initial-scale=1.0'>
<title>Document</title>
</head>
<body>
<style>
 #ul-test {
background-color: lightcoral;
 list-style-image: url('https://mfs.gki-webik.ru/s?path=/images/regular/svg/gki-pro (61).svg');
 }
 </style>
 <ul id='ul-test'>
 <li>html</li>
 <li>css</li>
 <li>javascript</li>
 </ul>
</body>
</html>