[README Update Request] There should be a section on how to update

[ForceConstant]

It seems interesting to me that neither the release notes, or the Readme.md mention how to update smartnode, only install. Can someone add the information about how we should update?

Thanks.

Complete guide here: https://docs.rocketpool.net/guides/node/updates.html

[ForceConstant]

@jeffersonwarrior yes thanks, and see the specific section regarding updating the smartnode there, but shouldn't there at least be a link to this guide in the readme and/or release notes?

PR submitted. #82