Update link to documentation

Author: vveesseelliinnaa

saleshub/SalesHub.Client/Views/Shared/_Layout.cshtml

@@ -72,7 +72,7 @@
                 <li>
                     <p>
                         <a href="https://github.com/telerik/kendo-saleshub-demo" target="_blank" class="k-button">View the Source on GitHub</a>
-                        <a href="http://docs.kendoui.com/tutorials/ASP.NET/SalesHub/kendo-saleshub-intro" target="_blank" class="k-button">View the SalesHub Documentation</a>
+                        <a href="http://docs.telerik.com/kendo-ui/aspnet-mvc/tutorials/tutorial-saleshub/kendo-saleshub-intro" target="_blank" class="k-button">View the SalesHub Documentation</a>
                     </p>
                 </li>
                 <li>