Help: Fix issue importing js file and swap menu entry REPL->WebUSB.

Author: microbit-carlos

help.html

@@ -21,10 +21,8 @@
 
     <!-- JS for contextual help -->
     <script src="static/js/jquery-2.1.4.min.js"></script>
-    <script src="python-main.js"></script> 
-    <script src="urlparser.js"></script>
-    
-     <script>
+    <script src="js/urlparser.js"></script>
+    <script>
         $(document).ready(function() {
             var paramsToCheck = ["snippets","blocks","share","experimental"];
             paramsToCheck.forEach(function(key){
@@ -61,7 +59,7 @@
             <li><a href="#fs">Files and Modules</a></li>
             <li id="nav-blocks" class="hidden"><a href="#blockly">Blockly</a></li>
             <li id="nav-snippets" class="hidden"><a href="#snippets">Snippets</a></li>
-            <li><a href="#REPL">REPL</a></li>
+            <li><a href="#WebUSB">WebUSB</a></li>
             <li><a href="#bugs">Bugs</a></li>
             <li><a href="#more">Further Information</a></li>
           </ul>