update links

Author: afshinm

index.html

@@ -117,8 +117,8 @@ <h6 class="example-header"><i class="fa fa-commenting-o"></i>&nbsp;Hint <span cl
                   <p class="example-description">
                   Hints are the new feature in Intro.js that enables you to add additional descriptions to any part of a web page. You can define hints by adding <code>data-hint</code> attribute to the HTML elements.
                   </p>
-                  <a class="button" href="/intro.js/example/hello-world/index.html" target="_blank">Demo</a>
-                  <a class="button" href="https://github.com/usablica/intro.js/blob/master/example/hello-world/index.html" target="_blank">Source</a>
+                  <a class="button" href="/intro.js/example/hint/index.html" target="_blank">Demo</a>
+                  <a class="button" href="https://github.com/usablica/intro.js/blob/master/example/hint/index.html" target="_blank">Source</a>
               </div>
           </div>
           <div class="one-half column">
@@ -127,8 +127,8 @@ <h6 class="example-header"><i class="fa fa-code"></i>&nbsp;Programmatic Hint <sp
                   <p class="example-description">
                   You can add/alter hints using JavaScript objects (or JSON). Also, you can optionally bind a function to hint events (e.g. hint click, hint close)
                   </p>
-                  <a class="button" href="/intro.js/example/hello-world/index.html" target="_blank">Demo</a>
-                  <a class="button" href="https://github.com/usablica/intro.js/blob/master/example/hello-world/index.html" target="_blank">Source</a>
+                  <a class="button" href="/intro.js/example/programmatic/hint.html" target="_blank">Demo</a>
+                  <a class="button" href="https://github.com/usablica/intro.js/blob/master/example/programmatic/hint.html" target="_blank">Source</a>
               </div>
           </div>
       </div>