blowfish/layouts/_default/_markup/render-link.html

<a
  href="{{ .Destination | safeURL }}"
  {{- with .Title -}}
    title="{{ . }}"
  {{- end }}
  {{- if or (strings.HasPrefix .Destination "http:") (strings.HasPrefix .Destination "https:") }}
    target="_blank"
  {{ end }}>
  {{- .Text | safeHTML -}}
</a>