Correction error message broker

src/users/broker.cpp

@@ -157,7 +157,7 @@ Broker::Broker(rapidjson::Document *user_description_file)
                 PPK_ASSERT_ERROR(
                     seed_defined,
                     "No field 'seed' defined although dm_user_multi_behavior "
-                    "need it");
+                    "needs it");
                 user = new DMUserMultiBehavior(name, param, dm_window,
                     seed_generator(), yellow_windows_list, red_windows_list,
                     logger_user_stat);
@@ -312,7 +312,7 @@ DMWindow_list* Broker::parse_dm_windows(const std::string attr_name,
         error_message.c_str());
     error_message =  "Invalid user_description file: the field ";
     error_message += attr_name;
-    error_message += " should be an array containing only array of int of size 2.";
+    error_message += " should be an array of intervals (pairs of integers).";
     std::vector<DMWindow> windows_collect;
     for (SizeType i = 0 ; i < windows_param.GetArray().Size(); i++) {
         const Value &window =