Update overview.md

[larrytin]

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
For 1.10 Features: set Milestone to 1.10 and Base Branch to release-1.10
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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[Bradamant3]

/assign @tengqm

[tengqm]

/lgtm

[tengqm]

@larrytin please sign the CLA for this to be considered a merge.

[larrytin]

@tengqm done!

[zacharysarah]

/lgtm
/approve
/hold
/assign @Bradamant3
Docs are frozen ❄️ for 1.10 release day. Feel free to remove the /hold once docs thaw.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tengqm, zacharysarah

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Needs approval from an approver in each of these files:

• docs/reference/kubectl/overview.md [zacharysarah]

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[Bradamant3]

/hold cancel