fixed render problem for mermaid picts on ingress page

Author: chrismetz09

layouts/partials/head.html

@@ -87,7 +87,7 @@
 <meta property="og:type" content="{{ $ogType }}">
 
 {{ if .HasShortcode "mermaid" }}
-<!-- Copied from https://unpkg.com/mermaid@8.5.0/dist/mermaid.min.js -->
+<!-- Copied from https://unpkg.com/mermaid@8.9.1/dist/mermaid.min.js -->
 <script async src="{{ "js/mermaid.min.js" | relURL }}"></script>
 {{ end }}