Fix doc issue in plugin.py
The documentation for `register_opts` in plugin.py includes two
examples, and 2nd one is ok but the 1st one is not.
Change-Id: Iecc9a2442b430ef31885f9455b8e43a4470f0e2d
diff --git a/tempest/test_discover/plugins.py b/tempest/test_discover/plugins.py
index 1206e3f..9c18052 100644
--- a/tempest/test_discover/plugins.py
+++ b/tempest/test_discover/plugins.py
@@ -76,7 +76,7 @@
conf.register_opt(my_config.service_option,
group='service_available')
conf.register_group(my_config.my_service_group)
- conf.register_opts(my_config.MyService +
+ conf.register_opts(my_config.MyServiceGroup,
my_config.my_service_group)
conf.register_group(my_config.my_service_feature_group)