.entry-title
  = link_to zine_path zine, rel: 'bookmark' do
    %h3.title
      = zine.title
    - if zine.subtitle.present?
      %h4.subtitle
        = zine.subtitle

.entry-title
  = link_to zine_path(zine), :rel => 'bookmark' do
    %h3.title
      = zine.title
    - if zine.subtitle.present?
      %h4.subtitle
        = zine.subtitle

Add rel tag as attribute on href
Add rel tag as attribute on href
