Good point. @DigitalStartup if you can wait and update Discourse later today or tomorrow, I’ve just added a plugin outlet (https://github.com/discourse/discourse/commit/5cf63e43c6d0bcf604cccc9d967cf393afc1bbcd) that will simplify adding content (and make it more future-proof).
You’ll instead add this to </head>
<script type="text/x-handlebars" data-template-name="/connectors/about-after-description/custom-about">
Custom HTML here
</script>