fixed a typo? The URI path being requested not the url.

Author: Marek Brieger

book/http_fundamentals.rst

@@ -368,7 +368,7 @@ on that value. This can get ugly quickly:
     // index.php
 
     $request = Request::createFromGlobals();
-    $path = $request->getPathInfo(); // the URL being requested
+    $path = $request->getPathInfo(); // the URI path being requested
 
     if (in_array($path, array('', '/')) {
         $response = new Response('Welcome to the homepage.');