Checkbox - add examples of "Reversed" and "Label wraps"

[adamviktora]

Describe the enhancement or change
Add two examples to Checkbox component - Reversed and Label wraps, as it is done in Radio: https://www.patternfly.org/components/forms/radio#reversed, https://www.patternfly.org/components/forms/radio#reversed

Should be done in main branch.

(created based on this comment: #10016 (comment))

[github-actions]

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