Fix error when building user guide with latest hugo version 0.141.0

Author: deining

layouts/partials/scripts/mermaid.html

@@ -1,7 +1,7 @@
 {{ $version := .Site.Params.mermaid.version | default "latest" -}}
 
 {{ $cdnurl := printf "https://cdn.jsdelivr.net/npm/mermaid@%s/dist/mermaid.esm.min.mjs" $version -}}
-{{ with resources.GetRemote $cdnurl -}}
+{{ with try (resources.GetRemote $cdnurl) -}}
   {{ with .Err -}}
     {{ errorf "Could not retrieve mermaid script from CDN. Reason: %s." . -}}
   {{ end -}}