<script src="//cdn.jsdelivr.net/particles.js/2.0.0/particles.min.js"></script>
<script src="{{ "/assets/js/sweet-scroll.min.js" }}"></script>
<script src="{{ "/assets/js/main.js" }}"></script>
{% include google-analytics.html %}

<script src="https://cdnjs.cloudflare.com/ajax/libs/particles.js/2.0.0/particles.min.js" integrity="sha256-+u54FaX9J+k40eAcg5K2YzICSQjrEYBI9gju5nE3HfY=" crossorigin="anonymous"></script>
<script src="{{ "/assets/js/sweet-scroll.min.js" }}"></script>
<script src="{{ "/assets/js/main.js" }}"></script>
{% include google-analytics.html %}

Change particles.js to use cdnjs
Change particles.js to use cdnjs