layouts: fix alternate outputs formatting

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

layouts/_default/baseof.html

@@ -30,7 +30,7 @@
   {{ end }}
   
   {{ range .AlternativeOutputFormats }} 
-  {{ printf `<link rel="%s" type="%s+%s" href="%s" title="%s" />` .Rel .MediaType.Type .MediaType.Suffix .Permalink $.Site.Title | safeHTML }} 
+  {{ printf `<link rel="%s" type="%s" href="%s" title="%s" />` .Rel .MediaType.Type .Permalink $.Site.Title | safeHTML }}
   {{ end }} 
   {{ block "links" . }} {{ end }}
   {{ partial "seo-schema.html" .}}