Update config.yaml for 2.2.3 launch

Author: lrnrthr

config.yaml

@@ -94,8 +94,8 @@ params:
       releases:
         - ["2.0.0", "2.0.1", "2.0.2", "2.0.4", "2.0.5", "2.0.6", "2.0.7", "2.0.8", "2.0.9"]
         - ["2.1.1", "2.1.3", "2.1.4"]
-        - ["2.2.0", "2.2.1", "2.2.2"]
-      latest: "2.2.2"
+        - ["2.2.0", "2.2.1", "2.2.2", "2.2.3"]
+      latest: "2.2.3"
       lts: "2.0"
       archived_url: "http://docs.basho.com/riak/1.4.12/"
     riak_cs: