Update README.md (KWOK)

[network-charles]

What type of PR is this?

/kind documentation

What this PR does / why we need it:

• It adds the definite article "the" where necessary in the documentation.
• It adds an indefinite article "a" where necessary in the documentation.
• It replaces the plural "hostnames" with the singular word "hostname" to describe that only one hostname node label key kubernetes/hostname exists.
• It adds "with" to indicate what is being interacted with.
• It uses a lowercase for the word "using" because the word is not a noun, and neither does it start the sentence.

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @network-charles. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[vadasambar]

Sorry for just getting to this. Thank you!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: network-charles, vadasambar

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Needs approval from an approver in each of these files:

• cluster-autoscaler/cloudprovider/kwok/OWNERS [vadasambar]

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[vadasambar]

/lgtm