README.md is missing how to look up the platform

[Pomax]

Are we looking for the name in the last identifier of a uname -a? E.g. "denverton" in Linux Synology 4.4.302+ #69057 SMP Fri Jan 12 17:02:57 CST 2024 x86_64 GNU/Linux synology_denverton_1819+?

[dqhoang]

I'm guessing here:
https://kb.synology.com/en-me/DSM/tutorial/What_kind_of_CPU_does_my_NAS_have