Updated copyright header

Signed-off-by: Matthias Koller <m.koller@peak-solution.de>
diff --git a/src/main/java/org/eclipse/mdm/api/base/file/FileService.java b/src/main/java/org/eclipse/mdm/api/base/file/FileService.java
index 86ba56c..9a552cc 100644
--- a/src/main/java/org/eclipse/mdm/api/base/file/FileService.java
+++ b/src/main/java/org/eclipse/mdm/api/base/file/FileService.java
@@ -1,5 +1,5 @@
 /********************************************************************************
- * Copyright (c) 2015-2019 Contributors to the Eclipse Foundation
+ * Copyright (c) 2015-2020 Contributors to the Eclipse Foundation
  *
  * See the NOTICE file(s) distributed with this work for additional
  * information regarding copyright ownership.
diff --git a/src/main/java/org/eclipse/mdm/api/base/model/FileLink.java b/src/main/java/org/eclipse/mdm/api/base/model/FileLink.java
index 767a5de..f558b54 100644
--- a/src/main/java/org/eclipse/mdm/api/base/model/FileLink.java
+++ b/src/main/java/org/eclipse/mdm/api/base/model/FileLink.java
@@ -1,5 +1,5 @@
 /********************************************************************************
- * Copyright (c) 2015-2019 Contributors to the Eclipse Foundation
+ * Copyright (c) 2015-2020 Contributors to the Eclipse Foundation
  *
  * See the NOTICE file(s) distributed with this work for additional
  * information regarding copyright ownership.