title: How can I make new line or break in array?
body: <p>I have a popover and I want to have break between each items 
  in content- data.</p>
  
  <pre><code> %i.fa.fa-folder.item{"data-content" =&gt; "#{folder.doc.map{ |file_id| File.find(file_id).name}.join{"&lt;br /&gt;"}.html_safe}",rel: "popover", title: "title:"}
  </code></pre>
  
  <p>I have added "\n" to the the join but its not working. Do you have any idea where should I put the "\n" in the code?</p>