[VOL-5329] - Update copyright docs to mention SPDX

overview/contributing/copyright.rst
overview/contributing/copyright/Makefile.rst
overview/contributing/copyright/copyright.rst
overview/contributing/copyright/golang.rst
overview/contributing/copyright/json.rst
overview/contributing/copyright/markdown.rst
---------------------------------------------
  o Add examples of copyright notice in source.
  o json syntax most difficult to add.
  o Document SPDX tokens.
  o Creat a containing folder copyright/ so documentation setup can be modular.

conf.py
release_notes/voltha_2.12.rst
-----------------------------
  o Sphinx replace:: feature stopped working, linkcheck reports broken urls.
  o Move mvn-* and jira string templates into conf.py as ext links.
  o Replace |token| with :token:.
  o Also shorten several verbatim URLs with :vol-{ger,git}: extlinks.

Change-Id: I0f9ec3f4354044968805da1872fc9f6bd864996f
Signed-off-by: Joey Armstrong <jarmstrong@linuxfoundation.org>
diff --git a/overview/contributing/copyright.rst b/overview/contributing/copyright.rst
index 05ef2a2..6d9eae7 100644
--- a/overview/contributing/copyright.rst
+++ b/overview/contributing/copyright.rst
@@ -3,11 +3,34 @@
 
 Include a copyright notice with all submissions to ONF repositoreis.
 
-- ``Copyright 2017-2023 Open Networking Foundation Contributors``
-- NOTE: Range values such as -present are not legally binding
+- Copyright 2017-2023 Open Networking Foundation Contributors
 
+  - NOTE: Range values such as -present are not legally binding
   - Copyright notice should be dated to the last year sources were modified.
 
+.. code-block:: BASH
+   :caption: Project Copyright Notice
+
+   # -----------------------------------------------------------------------
+   # Copyright 2017-2024 Open Networking Foundation Contributors
+   #
+   # Licensed under the Apache License, Version 2.0 (the "License");
+   # you may not use this file except in compliance with the License.
+   # You may obtain a copy of the License at
+   #
+   # http://www.apache.org/licenses/LICENSE-2.0
+   #
+   # Unless required by applicable law or agreed to in writing, software
+   # distributed under the License is distributed on an "AS IS" BASIS,
+   # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   # See the License for the specific language governing permissions and
+   # limitations under the License.
+   # -----------------------------------------------------------------------
+   # SPDX-FileCopyrightText: 2017-2024 Open Networking Foundation Contributors
+   # SPDX-License-Identifier: Apache-2.0
+   # -----------------------------------------------------------------------
+
+
 See Also
 --------
 
@@ -15,3 +38,5 @@
 - `Message syntax <https://github.com/joey-onf/copyright/blob/origin/master/notice>`_
 - `ONF CLA Information <https://wiki.opencord.org>`_
 - `Contributing License Agreement Manager <https://cla.opennetworking.org/>`_
+
+`Copyrights <copyright/copyright>`_