Add link to tutorials

Author: chsasank

index.html

@@ -79,7 +79,7 @@ <h4>Browse projects built using PyTorch.</h4>
                 <img src="/static/img/tutorials.svg">
                 <h3>Tutorials</h3>
                 <h4>Learn how to use the PyTorch library</h4>
-                <a class="btn" href="https://github.com/pytorch/tutorials">Browse Tutorials</a>
+                <a class="btn" href="http://pytorch.org/tutorials/">Browse Tutorials</a>
             </div>
         </div>
     </div>