<h1>Certification Campaigns</h1>
<ul>
  <% @campaigns.each do |campaign| %>
    <li>
      <%= link_to campaign.name, campaign_path(campaign) %>
    </li>
  <% end %>
</ul>
<% content_for :header_title, "Certification Campaigns" %>
<ul>
  <% @campaigns.each do |campaign| %>
    <li>
      <%= link_to campaign.name, campaign_path(campaign) %>
    </li>
  <% end %>
</ul>

Add header to header_title portion
Add header to header_title portion
