fixup! Add support for Mermaid diagrams

This avoids empty lines.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

layouts/_default/baseof.html

@@ -191,7 +191,7 @@ <h1 data-pagefind-meta="title">About{{ if (isset .Params "subtitle") }} - {{ .Pa
   {{ end }}
 
 </body>
-{{- if .Store.Get "hasMermaid" }}
+{{ if .Store.Get "hasMermaid" -}}
   <script type="module">
     import mermaid from 'https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.esm.min.mjs';
     mermaid.initialize({ startOnLoad: true });