moved 2017 allpix to 2019 corry in the dummy files

src/modules/Dummy/Dummy.cpp

 /**
  * @file
  * @brief Implementation of [Dummy] module
- * @copyright Copyright (c) 2017 CERN and the Allpix Squared authors.
+ * Copyright (c) 2019 CERN and the Corryvreckan authors.
  * This software is distributed under the terms of the MIT License, copied verbatim in the file "LICENSE.md".
  * In applying this license, CERN does not waive the privileges and immunities granted to it by virtue of its status as an
  * Intergovernmental Organization or submit itself to any jurisdiction.

src/modules/Dummy/Dummy.h

 /**
  * @file
  * @brief Definition of [Dummy] module
- * @copyright Copyright (c) 2017 CERN and the Allpix Squared authors.
+ * Copyright (c) 2019 CERN and the Corryvreckan authors.
  * This software is distributed under the terms of the MIT License, copied verbatim in the file "LICENSE.md".
  * In applying this license, CERN does not waive the privileges and immunities granted to it by virtue of its status as an
  * Intergovernmental Organization or submit itself to any jurisdiction.