Update slide deck 5

[calderonjesus]

What changes are you trying to make? (e.g. Adding or removing code, refactoring existing code, adding reports)

This pull request reorganizes and refines the main points and summary sections of the 05_rag.md instructional slides to provide clearer, more focused takeaways about Retrieval-Augmented Generation (RAG) and related agent patterns. The changes consolidate and clarify key concepts, improve consistency, and update references for accuracy.

Content and structure improvements:

• Consolidated the introduction, summary, and key takeaways into unified "Main Points" sections at the beginning and end of the slide deck, providing a consistent and focused summary of RAG's core concepts and best practices. [1] [2]
• Refined and expanded the list of main points to cover topics such as retrieval algorithms, chunking strategy, query rewriting, evaluation metrics, and the extension of RAG to multimodal and tabular data. [1] [2]

Clarity and language consistency:

• Improved language consistency throughout the slides (e.g., using straight quotes and correcting possessive forms) for better readability. [1] [2]

Reference updates:

• Updated the references section to include the latest edition of Chip Huyen's AI engineering book and clarified citation formatting.

What did you learn from the changes you have made?

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Was there another approach you were thinking about making? If so, what approach(es) were you thinking of?

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Were there any challenges? If so, what issue(s) did you face? How did you overcome it?

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How were these changes tested?

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A reference to a related issue in your repository (if applicable)

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Checklist

• [X ] I can confirm that my changes are working as intended

[github-actions]

Hello, thank you for your contribution. If you are a participant, please close this pull request and open it in your own forked repository instead of here. Please read the instructions on your onboarding Assignment Submission Guide more carefully. If you are not a participant, please give us up to 72 hours to review your PR. Alternatively, you can reach out to us directly to expedite the review process.

[github-actions]

Hello, thank you for your contribution. If you are a participant, please close this pull request and open it in your own forked repository instead of here. Please read the instructions on your onboarding Assignment Submission Guide more carefully. If you are not a participant, please give us up to 72 hours to review your PR. Alternatively, you can reach out to us directly to expedite the review process.