Fix magic key in webfinger XRD href

app/views/xrd/webfinger.xml.ruby

@@ -5,6 +5,6 @@ Nokogiri::XML::Builder.new do |xml|
     xml.Link(rel: 'http://webfinger.net/rel/profile-page', type: 'text/html', href: TagManager.instance.url_for(@account))
     xml.Link(rel: 'http://schemas.google.com/g/2010#updates-from', type: 'application/atom+xml', href: account_url(@account, format: 'atom'))
     xml.Link(rel: 'salmon', href: api_salmon_url(@account.id))
-    xml.Link(rel: 'magic-public-key', href: @magic_key)
+    xml.Link(rel: 'magic-public-key', href: "data:application/magic-public-key,#{@magic_key}")
   end
 end.to_xml