fix: check for src before attempting to add popover

Jacky Zhao

2022-04-06 f9c7cdf928e8068532d2630336a7b08d5085548e

 layouts/_default/section.html

@@ -19,6 +19,7 @@
    </article>
    {{partial "contact.html" .}}
</div>
{{partial "popover.html" .}}
</body>

</html>