doc: update Buffer encoding option count
#36952 added the base64url encoding option.
Easier to just remove the count of options so it doesn’t need to be updated to four, five, etc. in the future.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
#36952 added the base64url encoding option.
Easier to just remove the count of options so it doesn’t need to be updated to four, five, etc. in the future.