message: Fixes hreflang for other language versions
diff: {{ if .IsTranslated }}
  {{ T "footer-other-langs" }}
  {{ range .Translations }}
  - <a href="{{ .Permalink }}">{{ T .Lang }}</a>
  + <a rel="alternate" hreflang="{{ .Lang }}" href="{{ .Permalink }}">{{ T .Lang }}</a>
  {{ end}}
  {{ end }}
  <span style="float: right;">We <3 Datenschutz.
  