update link to collapse plugin

docs/javascript.html

@@ -869,7 +869,7 @@ $('#my-alert').bind('closed', function () {
       <div class="row">
         <div class="span3 columns">
           <p>The collapse plugin offers simple, flexible collapsible element support for making accordions and other collapsible ui components.</p>
-          <a href="../js/bootstrap-collapsible.js" target="_blank" class="btn primary">Download</a>
+          <a href="../js/bootstrap-collapse.js" target="_blank" class="btn primary">Download</a>
         </div>
         <div class="span9 columns">
           <h3>Using bootstrap-collapse.js</h3>