What is the easiest way please to use relative URLs in my WordPress header for calling all JS and CSS files?

So instead of:

<script src=".min.js?ver=5.3.2" type="text/javascript" defer=""></script>

I want:

<script src="/wp-includes/js/wp-emoji-release.min.js?ver=5.3.2" type="text/javascript" defer=""></script>

Thank you :)