docs: added kyverno basics and minor cleanup

[ronaldpetty]

📑 Description

Initial documentation for Kyverno integration found here https://github.com/k8sgpt-ai/k8sgpt/pull/1200

✅ Checks

• [x] My pull request adheres to the code style of this project
• [x] My code requires changes to the documentation
• [x] I have updated the documentation as required
• [x] All the tests have passed

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