Add this.blur() to manual AJAX example

Because the modal cannot infer the anchor that triggered the open, we must explicitly blur it. Otherwise the link remain focused and the modal will be re-triggered each time the `return` key is hit.

examples/index.html

@@ -274,6 +274,7 @@ <h2 id="example-4"><a href="#example-4">#</a> Example 4: AJAX</h2>
 <pre><code>// Open modal in AJAX callback
 $('#manual-ajax').click(function(event) {
  event.preventDefault();
+ this.blur(); // Manually remove focus from clicked link.
  $.get(this.href, function(html) {
  $(html).appendTo('body').modal();
  });
@@ -494,6 +495,7 @@ <h2 id="example-8"><a href="#example-8">#</a> Example 8: Custom Class for Close
 
  $('#manual-ajax').click(function(event) {
  event.preventDefault();
+ this.blur();
  $.get(this.href, function(html) {
  $(html).appendTo('body').modal();
  });