Enables result highlighting

Author: fekete-robert

layouts/partials/hooks/head-end.html

@@ -10,6 +10,12 @@
 {{ end }}
 
 {{ if .Site.Params.offlineSearchPagefind -}}
+<!-- Needed to highlight search keyword on the result page -->
 <script
+  src="/pagefind/pagefind-highlight.js"
     type="application/x-javascript"></script>
+    <script type="module">
+        await import('/pagefind/pagefind-highlight.js');
+        new PagefindHighlight({ highlightParam: "highlight" });
+    </script>
 {{ end -}}