Trying to get multiple author's output with my jekyll blog, but it doesn't seem to be working.

_config.yml

authors:
  garthdb:
    display_name: Garth Braithwaite
    gravatar: b5cf6e112eeee572d722743dea924487
    email: [email protected]
    web: http://www.garthdb.com/
    twitter: garthdb
    github: garthdb
    bio: 'Engineer at Adobe working on <a href="http://www.topcoat.io">Topcoat</a>.'
  test:
    display_name: tester mctesty
    gravatar: b5cf6e112eeee572d722743dea924487
    email: [email protected]
    web: http://www.test.com/
    twitter: test
    github: test
    bio: 'Ima test.'

atom.xml

  {% for author in site.authors %}
  <author>
    <name>{{author[1].display_name}}</name>
    <uri>{{author[1].web}}</uri>
    <email>{{author[1].email}}</email>
  </author>
  {% endfor %}

output.xml

  <author>
    <name>Garth Braithwaite</name>
    <uri>http://www.garthdb.com/</uri>
    <email>[email protected]</email>
  </author>
  
  <author>
    <name>tester mctesty</name>
    <uri>http://www.test.com/</uri>
    <email>[email protected]</email>
  </author>