Fix wrong import (#930)

* Fix wrong import

fix wrong import from `url` (unused in example) to `path`

* Update tutorial_02.rst

Co-authored-by: Rust Saiargaliev <rustem.saiargaliev@thermondo.de>

Author: deoktr

docs/tutorial/tutorial_02.rst

@@ -34,7 +34,7 @@ URL this view will respond to:
 
 .. code-block:: python
 
-    from django.conf.urls import url, include
+    from django.urls import path, include
     import oauth2_provider.views as oauth2_views
     from django.conf import settings
     from .views import ApiEndpoint