📖 Fix references to spec.kubernetesVersion for the Machine object to spec.Version

[saimanoj01]

What this PR does / why we need it:
Change reference from "spec.kubernetesVersion" to "spec.Version" for the Machine object.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #3257

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[k8s-ci-robot]

Hi @saimanoj01. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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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[ncdc]

/ok-to-test
/approve

@saimanoj01 please let us know if you need any help resolving the CLA bot. Thanks!

[saimanoj01]

@ncdc Updated the email id on the commit with which I signed the CLA.

[vincepri]

/lgtm
/milestone v0.3.7

[ncdc]

/hold

[ncdc]

Need to regen the yaml

[fabriziopandini]

@saimanoj01 please run make generate (or simply make generate-manifests) locally and push the regeneated yaml files as part of this change

[vincepri]

/lgtm cancel

[k8s-ci-robot]

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ncdc

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[vincepri]

/lgtm
/hold cancel