js -> min.js

src/partials/footer-scripts.hbs

 <script id="site-script" src="{{{uiRootPath}}}/js/site.js" data-ui-root-path="{{{uiRootPath}}}"></script>
+<script async src="{{{uiRootPath}}}/js/vendor/html2canvas.min.js"></script>
 <script async src="{{{uiRootPath}}}/js/vendor/highlight.js"></script>
-<script src="{{{uiRootPath}}}/js/vendor/html2canvas.js"></script>
 {{#if env.SITE_SEARCH_PROVIDER}}
 {{> search-scripts}}
 {{/if}}