Update keps/sig-node/4176-cpumanager-spread-cpus-preferred-policy/README.md

Co-authored-by: Kevin Klues <[email protected]>

Author: Jeffwan

keps/sig-node/4176-cpumanager-spread-cpus-preferred-policy/README.md

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 [documentation style guide]: https://github.com/kubernetes/community/blob/master/contributors/guide/style-guide.md
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-We propose this KEP to introduce a new CPU Manager Static Policy Option that spreads hyper threads across physical cores. In this policy, we changed the cpu assignment sorting algorithm to sort by socket and then directly cpus without taking physical cores into ordering. It seems like a noisy neighbour issue, but it's always true. We will explain the reason in the motivation section. This policy is useful for some applications which need to take advantage of CPU Cache.
+In this KEP, we propose a new CPU Manager Static Policy Option called `distribute-cores-across-cpus` to prefer allocating cores from different physical CPUs on the same socket. This new policy is analogous to the `distribute-cpus-across-numa` policy option in that it proposes to *spread* cores allocations out, rather than pack them together. The main difference being that this new policy spreads individual core allocations across CPUs, whereas the existing policy spreads them across NUMA nodes. Such a policy is useful, for example, if an application wants to avoid being a noisy neighbor with itself, but still take advantage of the L2 cache by running its application threads on the same socket.
 
 ## Motivation