[Docs] Old releases in docs

https://docs.mirantis.com/openstack/fuel/fuel-master/reference-architecture.html#ha-deployment-for-networking

Note the following:

Public IP addresses can still be allocated to all nodes in a 5.1 Neutron environment. This can be enabled under the "Settings" tab by selecting Public network assignment -> Assign public network to all nodes. This setting is absent when using Nova-Net because a public IP address is always allocated to each node.
When using Fuel 5.1 to manage 5.0.x environments, the environment must conform to the 5.0.x practice, so each target node must have a public IP assigned to it, even when using Neutron.
Default gateways on nodes that do not have public IP addresses point to the master node's IP address for Fuel 5.1; this behavior is expected to change in future releases.

Please re-phrase this for 6.1

If you are not using the HA deployment:
  You may decrease the Public range by one IP address (which would be allocated for the Virtual IP in HA mode).

6.1 has no non-HA

Note
All 5.0.x environments and 5.1 Neutron environments for which Public network assignment -> Assign public network to all nodes is set have the same requirements as those shown for Nova-Network.

Please re-phrase this for 6.1