title: protocol Phoenix.Param not implemented for [token: "12345"]
body: <p>I have this in router.ex:</p>
  
  <pre><code>    get "/my_url/my_url2/:token", MySuperController, :my_action
  </code></pre>
  
  <p>When I call this:</p>
  
  <pre><code>&lt;%= link("something", to: my_super_url(@conn, :my_action, token: "12345")) %&gt;
  </code></pre>
  
  <p>I get an error:</p>
  
  <pre><code>protocol Phoenix.Param not implemented for [token: "12345"]
  </code></pre>
  
  <p>How can I fix it?</p>