title: author.name + URL issue in Jekyll
body: <p>I'm back to work on a jekyll project. When I first started working on this project, I asked on this page how to pull an author's name in a jekyll post, and was advised to use this code:</p>
  
  <pre><code>   {{ site.data.authors[page.author].name }}
  </code></pre>
  
  <p>...which worked fine. Now my goal is to have an authors page on which to display author info.
  I have a authors.yml file (in the _data file) with items structured as follows : </p>
  
  <pre><code>john_doe:    
  name: John Doe    
  email: john@website.com
  </code></pre>
  
  <p>I have used the Jekyll guidelines and my code goes like this in the authors.md page : </p>
  
  <pre><code>&lt;ul&gt;
      {% for author in site.data.authors %}
      &lt;li&gt;
          {{ author.name }}
      &lt;/li&gt;
      {% endfor %}
  &lt;/ul&gt; 
  </code></pre>
  
  <p>I know the first part of the code is functional because I have a bullet point showing for each author i.e list item. However the list items return empty without the author's name (eventually I would like to pull more info from the yml, but since I can't get through this first step...)</p>
  
  <p>I tried switching to this structure, with no success:</p>
  
  <pre><code>   - name : john_doe 
     - email: john@email.com
  </code></pre>
  
  <p>Second issue: I also have set links to extra pages using a navigation.yml file with links sorted like so:</p>
  
  <pre><code>- title: A propos
    url: /about/
    excerpt: ""
  </code></pre>
  
  <p>These urls worked fine locally but no such luck after I pushed it on the repo...</p>
  
  <p>If anyone has any ideas... I'm stuck!
  My repo: <a href="https://github.com/piapandelakis/piapandelakis.github.io" rel="nofollow noreferrer">https://github.com/piapandelakis/piapandelakis.github.io</a></p>