update required hugo min version to v0.65

layouts/shortcodes/mermaid.html

@@ -1,9 +1,14 @@
 {{ if not (.Page.Scratch.Get "mermaid") }}
 <!-- Include mermaid only first time -->
 <script src="{{ "js/mermaid.min.js" | relURL }}"></script>
+<script>
+  mermaid.initialize({
+    flowchart: { useMaxWidth: true }
+  });
+</script>
 {{ .Page.Scratch.Set "mermaid" true }}
 {{ end }}
 
 <p class="mermaid{{ with .Get "class" }} {{ . }}{{ end }}">
-    {{ .Inner }}
+  {{- .Inner -}}
 </p>