hugo-theme-paradox/layouts/_default/_markup/render-link.html

{{ $link := .Destination }}
{{ $isRemote := strings.HasPrefix $link "http" }}
{{- if not $isRemote -}}
{{ $url := urls.Parse .Destination }}
{{- if $url.Path -}}
{{ $fragment := "" }}
{{- with $url.Fragment }}{{ $fragment = printf "#%s" . }}{{ end -}}
{{- with .Page.GetPage $url.Path }}{{ $link = printf "%s%s" .RelPermalink $fragment }}{{ end }}{{ end -}}
{{- end -}}
<a class="link" href="{{ $link | safeURL }}"{{ with .Title}} title="{{ . }}"{{ end }}{{ if $isRemote }} target="_blank"{{ end }}>{{ .Text | safeHTML }}</a>