Changed Data Formats guide title

index.html

@@ -118,7 +118,7 @@
 
                 <li class="item-link">
                   <a class="item-link__action" href="http://edx.readthedocs.org/projects/devdata/en/latest/">
-                    <h4 class="item-link__title">Data Formats</h4>
+                    <h4 class="item-link__title">Research Guide</h4>
                     <div class="item-link__copy">
                       <p>How we persist information in our system.</p>
                     </div>