fix(docs): reviewed rag agents guide and made minor changes

[FelixNicolaeBucsa]

Proposed Changes

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Linked Issues

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Types of changes

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• [x] Content update.
• [ ] Bug fix (non-breaking change that fixes an issue).
• [ ] New feature added (non-breaking change that adds functionality).
• [ ] Breaking change (fix or feature that would cause existing functionality to stop working as expected).
• [ ] Something else (e.g., tests, scripts, example, deployment, infrastructure).

Checklist

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• [x] I have read the CONTRIBUTING guide
• [x] Checks and tests pass locally

Further comments

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