Fix the readme example

The readme example test did not exist. Fixing the test path to be valid.

Change-Id: I7521d6b380f00037da039eca16573f52ca7cfca7
diff --git a/README.rst b/README.rst
index ce445fe..849a73f 100644
--- a/README.rst
+++ b/README.rst
@@ -41,7 +41,7 @@
 
 To run a single test case, call with full path, for example::
 
-    $ tox -e all-plugin -- octavia_tempest_plugin.tests.v2.scenario.test_basic_ops.BasicOpsTest.test_basic_ops
+    $ tox -e all-plugin -- octavia_tempest_plugin.tests.scenario.v2.test_traffic_ops.TrafficOperationsScenarioTest.test_basic_traffic
 
 To retrieve a list of all tempest tests, run::