title: I am using the linkedin share button but the title, description and image are not displayed
body: <p>I am using the opengraph tags in the header of my page :</p>
  
  <p><a href="https://openlab.ecdys.fr/articles/sodexo-s-testimonial-about-the-collaborative-platform-ecdys-openlab" rel="nofollow">https://openlab.ecdys.fr/articles/sodexo-s-testimonial-about-the-collaborative-platform-ecdys-openlab</a></p>
  
  <p>The url is is perfectly parsed by facebook and google but not by linkedin.
  When i type the url in linkedin sharing message, i only get the following :</p>
  
  <blockquote>
    <p>openlab.ecdys.fr </p>
  </blockquote>
  
  <p>The title, description and image are not displayed.
  What is wrong ? Thanks a lot for your help</p>
  
  <p>Below is the source code of the header :</p>
  
  <pre><code>   &lt;html lang="fr" prefix="og: http://ogp.me/ns#"&gt;
       &lt;head&gt;
         &lt;meta charset="utf-8" /&gt;
         &lt;meta name="viewport" content="width=device-width, initial-scale=1.0" /&gt;
         &lt;meta name = "robots", content = "all" /&gt;
         &lt;meta name = "language", content = "fr" /&gt;
         &lt;title&gt;Sodexo&amp;#39;s testimonial about the collaborative platform ECDYS OpenLab™ &lt;/title&gt;    
  &lt;meta content="Sodexo Benefits and Rewards organized collaborative consultations using ECDYS OpenLab™. Betina Johnstone, Innovation Community Manager, presents the background, the objectives and her experience on this project !" name="description" /&gt;    
  &lt;meta content="co-innovation, Sodexo, Témoignage client, testimonial" name="keywords" /&gt;    
  &lt;meta content="website" property="og:type" /&gt;    
  &lt;meta content="Sodexo Benefits and Rewards organized collaborative consultations using ECDYS OpenLab™. Betina Johnstone, Innovation Community Manager, presents the background, the objectives and her experience on this project !" property="og:description" /&gt;    
  &lt;meta content="https://s3.amazonaws.com/innowaze_blog/uploads/article/illustration/33/Capture_d__cran_2015-03-11___10.40.36.png" property="og:image" /&gt;    &lt;meta content="Sodexo&amp;#39;s testimonial about the collaborative platform ECDYS OpenLab™ " property="og:title" /&gt;    
  &lt;meta content="summary_large_image" property="twitter:card" /&gt;   
  &lt;meta content="Sodexo&amp;#39;s testimonial about the collaborative platform ECDYS OpenLab™ " property="twitter:title" /&gt;    
  &lt;meta content="Sodexo Benefits and Rewards organized collaborative consultations using ECDYS OpenLab™. Betina Johnstone, Innovation Community Manager, presents the background, the objectives and her experience on this project !" property="twitter:description" /&gt;    
  &lt;meta content="https://s3.amazonaws.com/innowaze_blog/uploads/article/illustration/33/Capture_d__cran_2015-03-11___10.40.36.png" property="twitter:image" /&gt;
  </code></pre>