dev: fix website search for items with quotes (#5994)

Author: ldez

docs/layouts/_partials/utils/extract-headings.html

@@ -20,7 +20,7 @@
     {{ $.scratch.Add "keys" (slice $key) }}
   {{ end }}
 
-  {{ $title := (printf "<h%d>%s" $heading.Level $heading.Title) }}
+  {{ $title := (printf "<h%d>%s" $heading.Level $heading.Title) | htmlUnescape }}
   {{ $.scratch.Add "titles" (slice $title) }}
 
   {{ partial "utils/extract-headings.html" (dict