head: AlternativeOutputFormats impl as in hugo docs

* https://gohugo.io/templates/output-formats/#list-output-formats

layouts/partials/head.html

@@ -43,8 +43,8 @@
 {{- hugo.Generator }}
 <!-- RSS -->
 {{- range .AlternativeOutputFormats -}}
-{{- printf `<link rel="%s" type="%s" href="%s" title="%s" />` .Rel .MediaType.Type .Permalink $.Site.Title | safeHTML }}
-{{- end -}}
+<link rel="{{ .Rel }}" type="{{ .MediaType.Type }}" href="{{ .Permalink | safeURL }}">
+{{ end -}}
 <!-- Misc -->
 {{- if eq (getenv "HUGO_ENV") "production" | or (eq .Site.Params.env "production") }}
 {{- template "_internal/google_analytics_async.html" . }}