[VOL-5545] Update voltha docs

- release notes for VOLTHA versions 2.6 to 2.15 with new Jira links and adjust release schedule details
- update old links
- remove ONF references and links
- update e-mail links
- update copright notices

Change-Id: Id6be18986a8f52f2dfcc07e2b0d2efcb0ae1c0e4
Signed-off-by: serkant.uluderya <serkant.uluderya@netsia.com>
diff --git a/howto/release/components/onos_dependencies.rst b/howto/release/components/onos_dependencies.rst
index 51bc0ad..ea6b94d 100644
--- a/howto/release/components/onos_dependencies.rst
+++ b/howto/release/components/onos_dependencies.rst
@@ -101,7 +101,7 @@
 
    <?xml version="1.0" encoding="UTF-8"?>
    <!--
-     ~ Copyright 2017-2023 Open Networking Foundation (ONF) and the ONF Contributors
+     ~ Copyright 2017-2023 Linux Foundation Broadband Contributors
      ~
      ~ Licensed under the Apache License, Version 2.0 (the "License");
    -->