Update analytics.html

Author: bryevdv

_includes/analytics.html

@@ -1,10 +1,4 @@
-<!-- Global Site Tag (gtag.js) - Google Analytics -->
-<script async src="https://www.googletagmanager.com/gtag/js?id={{ site.ga_id }}"></script>
-<script>
-  window.dataLayer = window.dataLayer || [];
-  function gtag(){dataLayer.push(arguments);}
-  gtag('js', new Date());
+<!-- Plausible.io Analytics -->
+<script defer data-domain="bokeh.org" src="https://plausible.io/js/script.js"></script>
 
-  gtag('config', "{{ site.ga_id }}");
-</script>
-<!-- End Google Analytics -->
+<!-- End Plausible.io Analytics -->