Show just 3 tweets

_layouts/index.html

@@ -56,7 +56,7 @@ layout: default
     </div>
 
     <div id="right-column">
-      <a class="twitter-timeline" data-tweet-limit="8" data-lang="en" data-width="380" data-height="800" data-dnt="true" data-theme="light" data-link-color="#B57B00" href="https://twitter.com/elixir_lu?ref_src=twsrc%5Etfw">Tweets by elixir_lu</a> <script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
+      <a class="twitter-timeline" data-tweet-limit="3" data-lang="en" data-width="380" data-height="800" data-dnt="true" data-theme="light" data-link-color="#B57B00" href="https://twitter.com/elixir_lu?ref_src=twsrc%5Etfw">Tweets by elixir_lu</a> <script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
 
       {% if paginator.posts %}
       <h2>Our news</h2>