[Echoclient] properly format parameter output

apps/EchoClient.cpp

@@ -427,9 +427,9 @@ static void printSettings() {
 	} else {
 		std::cout << iterations << "iterations";
 	}
-	std::cout << ",clients=" << nclients;
-	std::cout << ",size=" << size;
-	std::cout << ",sendquit= " << (sendQuit ? "true" : "false");
+	std::cout << ", clients=" << nclients;
+	std::cout << ", size=" << size;
+	std::cout << ", sendquit=" << (sendQuit ? "true" : "false");
 	std::cout << "}" << std::endl;
 }