fix model incosistency

Author: ipa-nhg

src/ros_graph_parser/core_class.py

@@ -390,9 +390,9 @@ def dump_java_system_model(self, package=""):
         system_model_str += self.services.java_format_system_model(
             "            ", "SrvServers", "Server", self.name, package, "ServiceServer")
         system_model_str += self.action_servers.java_format_system_model(
-            "            ", "ActionServers", "Server", self.name, package)
+            "            ", "ActionServers", "ActionServer", self.name, package)
         system_model_str += self.action_clients.java_format_system_model(
-            "            ", "ActionClients", "Client", self.name, package)
+            "            ", "ActionClients", "ActionClient", self.name, package)
         system_model_str += self.params.java_format_system_model(
             "            ", "Parameters", "Parameter", self.name, package)
         system_model_str += "},\n"