so, i changed /opt/foreman/app/views/hosts/storeconfig_klasses.html.erb\

it adds a [docu] link after the class.
here are changes.

its quick and dirty, but works.

<% title "All Puppet Classes for #{@host}" %>
  <table class="table table-bordered table-striped">
    <tr>
      <th class="">Class</th>
    </tr>
    <% @host.classes_from_storeconfigs.each do |klass| %>
      <tr>
        <td><%= h klass %>&nbsp;[<a href="/puppet/rdoc/<%= @host.environment %>/classes/<%= klass.gsub('::', '/').downcase %>.html">docu</a>]</td>
      </tr>
    <% end %>
  </table>
<%= link_to 'back', host_path(@host) %>