Core config_schema_SUITE: cosmetics

Author: michaelklishin

deps/rabbit/test/config_schema_SUITE_data/rabbit.snippets

@@ -311,7 +311,7 @@ cluster_formation.dns.hostname = discovery.eng.example.local",
  []},
 
  %% registration is enabled by default for the backends that support it
- {cluster_formation_explicitly_enable_of_registration,
+ {cluster_formation_explicitly_enable_registration,
    "cluster_formation.registration.enabled = true",
    [{rabbit,
         [{cluster_formation, [