Fix "matchExpressions" for "nodeAffinity"

[chs2]

No description provided.

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[eladkal]

Is this doc refrenced somewhere? It seems old and outdated (it even imports from contrib)
cc @RNHTTR I assume we might need a followup to #37728 to handle this doc?

[RNHTTR]

I don't think so. It seems correct in the docs for the current version of the provider -- this issue is for the KPO docs in 1.10.15

[amoghrajesh]

@chs2 can you please update the PR description? Its hard to tell what you are trying to achieve without a description

[hussein-awala]

matchExpressions should be an array of expressions, LGTM