docs: add scp examples to release.md
Currently the release steps mention using scp to upload and download SHASUMS256.txt
This commit adds easy to follow examples of using scp for reference.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Currently the release steps mention using scp to upload and download SHASUMS256.txt
This commit adds easy to follow examples of using scp for reference.