JS docs: fix caps of "CSS" acronym

javascript.html

@@ -89,7 +89,7 @@ $('#myModal').on('show.bs.modal', function (e) {
     <h3>About transitions</h3>
     <p>For simple transition effects, include <code>transition.js</code> once alongside the other JS files. If you're using the compiled (or minified) <code>bootstrap.js</code>, there is no need to include this&mdash;it's already there.</p>
     <h3>What's inside</h3>
-    <p>Transition.js is a basic helper for transitionEnd events as well as a css transition emulator. It's used by the other plugins to check for css transition support and to catch hanging transitions.</p>
+    <p>Transition.js is a basic helper for transitionEnd events as well as a CSS transition emulator. It's used by the other plugins to check for CSS transition support and to catch hanging transitions.</p>
   </div>