License update to EPL v2.0

- update in sources not currently active for the release
diff --git a/plugins/org.eclipse.objectteams.otdt.ui.help/build.properties b/plugins/org.eclipse.objectteams.otdt.ui.help/build.properties
index 5b6569e..1735915 100644
--- a/plugins/org.eclipse.objectteams.otdt.ui.help/build.properties
+++ b/plugins/org.eclipse.objectteams.otdt.ui.help/build.properties
@@ -6,10 +6,12 @@
 # Technology (FIRST), Berlin, Germany and Technical University Berlin,
 # Germany.
 # 
-# All rights reserved. This program and the accompanying materials
-# are made available under the terms of the Eclipse Public License v1.0
+# This program and the accompanying materials
+# are made available under the terms of the Eclipse Public License 2.0
 # which accompanies this distribution, and is available at
-# http://www.eclipse.org/legal/epl-v10.html
+# https://www.eclipse.org/legal/epl-2.0/
+#
+# SPDX-License-Identifier: EPL-2.0
 # 
 # Please visit http://www.eclipse.org/objectteams for updates and contact.
 #