change talosctl reset --system-labels-to-wipe to wipe partitions

[pranav767]

Pull Request

What? (description)

Issue URL: #12090
Update the --system-labels-to-wipe flag description in talosctl reset to clarify that it wipes and re-creates selected system disk partitions by label.

Why? (reasoning)

Improve documentation

Acceptance

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• you linked an issue (if applicable)
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[smira]

I think there is some misunderstanding in the issue - Talos doesn't remove partitions today, it only wipes them. The change was to drop partitions completely.