single op add check json file

ge/offline/single_op_parser.h

@@ -75,7 +75,7 @@ class SingleOpParser {
     std::string tensor_name;
     std::string format;
     std::string dtype;
-  }
+  };
 
   static Status ReadJsonFile(const std::string &file, nlohmann::json &json_obj);
   static bool Validate(const SingleOpDesc &op_desc);