Fix some typos in [en] docs.

[yanggangtony]

This pr is fix some tiny typos.

likes

1 Config Maps --> ConfigMaps
2 liveleness --> liveness

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[tengqm]

In general, we don't fix blogs that are older than one year.
In this case, it is a typo fix, which is fine.
/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: bf478eace4fc6096d82bbce5e72e643b88a1f106

[kundan2707]

/lgtm

[divya-mohan0209]

FWIW, we have a policy of not maintaining blog posts aged > 1 year unless explicitly mentioned. Additionally, we have a trivial edit policy that categorizes spelling/case changes as minor edits that do not add overall value.

On behalf of all SIG Docs approvers and reviewers, I'd request you to keep this in mind next time while submitting the PR since these add to manual overload.

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: divya-mohan0209

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