small fix

.gitlab-ci.yml

+#
+#
+#  ******************************************************************************
+#  MontiCAR Modeling Family, www.se-rwth.de
+#  Copyright (c) 2017, Software Engineering Group at RWTH Aachen,
+#  All rights reserved.
+#
+#  This project is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU Lesser General Public
+#  License as published by the Free Software Foundation; either
+#  version 3.0 of the License, or (at your option) any later version.
+#  This library is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+#  Lesser General Public License for more details.
+#
+#  You should have received a copy of the GNU Lesser General Public
+#  License along with this project. If not, see <http://www.gnu.org/licenses/>.
+# *******************************************************************************
+#
+
 image: maven:3-jdk-8
 
 build: