Merge pull request #15091 from twbs/popovers-heading

move popover examples heading to directly before the actual examples

docs/_includes/js/popovers.html

 <div class="bs-docs-section">
   <h1 id="popovers" class="page-header">Popovers <small>popover.js</small></h1>
 
-  <h2 id="popovers-examples">Examples</h2>
   <p>Add small overlays of content, like those on the iPad, to any element for housing secondary information.</p>
   <p>Popovers whose both title and content are zero-length are never displayed.</p>
 
@@ -36,6 +35,7 @@ $(function () {
     <p>Sometimes you want to add a popover to a hyperlink that wraps multiple lines. The default behavior of the popover plugin is to center it horizontally and vertically. Add <code>white-space: nowrap;</code> to your anchors to avoid this.</p>
   </div>
 
+  <h2 id="popovers-examples">Examples</h2>
   <h3>Static popover</h3>
   <p>Four options are available: top, right, bottom, and left aligned.</p>
   <div class="bs-example bs-example-popover">