fix: navbar url for multi-lang site (#193)

* fix: image URL in feature card

* fix: use relLangURL of pageRef for navbar entries

layouts/shortcodes/hextra/feature-card.html

@@ -10,6 +10,10 @@
 {{- $external := hasPrefix $link "http" -}}
 {{- $href := cond (strings.HasPrefix $link "/") ($link | relURL) $link -}}
 
+{{- if hasPrefix $image "/" -}}
+  {{- $image = relURL (strings.TrimPrefix "/" $image) -}}
+{{- end -}}
+
 <a
   {{ with $link }}href="{{ $href }}" {{ with $external }} target="_blank" rel="noreferrer"{{ end }}{{ end }}
   {{ with $style }}style="{{ . | safeCSS }}"{{ end }}