Fix assertEquals warning

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/document_indexing/tests/test_views.py

@@ -17,7 +17,7 @@ from .mixins import IndexTestMixin, IndexViewTestMixin
 class IndexViewTestCase(IndexTestMixin, IndexViewTestMixin, GenericDocumentViewTestCase):
     def test_index_create_view_no_permission(self):
         response = self._request_test_index_create_view()
-        self.assertEquals(response.status_code, 403)
+        self.assertEqual(response.status_code, 403)
 
         self.assertEqual(Index.objects.count(), 0)