docs: improve comment

Author: kenjis

user_guide_src/source/concepts/http/001.php

@@ -4,7 +4,7 @@
 
 $request = service('request');
 
-// the URI being requested (i.e., /about)
+// the URI path being requested (i.e., /about)
 $request->getUri()->getPath();
 
 // Retrieve $_GET and $_POST variables