Correct node name section

[nomicode]

Documentation feedback

• Page title: CrateDB multi-node setup
• Page URL: https://crate.io/docs/crate/howtos/en/latest/scaling/multi-node-setup.html
• Source: https://github.com/crate/crate-howtos/blob/master/docs/scaling/multi-node-setup.rst

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"To do this, you must be able to refer to nodes by name."

this isn't true. you can use node name, fully-qualified hostname, or IP address

this document should be updated to account for the fact that some people may want to configure a cluster using hostnames or IP addresses without setting node names. this allows setting up a cluster with the same crate.yaml file shared between all nodes