docs: Update README with cross references and resources (#2089)

Author: Prajwal-Microsoft

README.md

@@ -247,6 +247,25 @@ When deploying the solution using the "Deploy to Azure" button, you'll see two f
 
 ## Supporting documentation
 
+### Cross references
+Check out similar solution accelerators
+
+| Solution Accelerator | Description |
+|---|---|
+|[GPT-RAG Accelerator](https://github.com/Azure/gpt-rag)| Secure enterprise GPT assistant framework that uses Retrieval-Augmented Generation to ground answers on your data. It provides a ready architecture (Azure OpenAI + knowledge search) for building AI chatbots that “know” your enterprise content, with built-in security and scalability.|
+|[Document Processing Accelerator](https://github.com/Azure/doc-proc-solution-accelerator/) | Modular document AI pipeline that automatically extracts, analyzes, and indexes information from unstructured documents (PDFs, images, etc.) at scale. It offers plug-and-play components for OCR, classification, summarization, and integration to search or chatbots – speeding up data ingestion with enterprise security.|
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+💡 Want to get familiar with Microsoft's AI and Data Engineering best practices? Check out our playbooks to learn more
+
+| Playbook | Description |
+|:---|:---|
+| [AI&nbsp;playbook](https://learn.microsoft.com/en-us/ai/playbook/) | The Artificial Intelligence (AI) Playbook provides enterprise software engineers with solutions, capabilities, and code developed to solve real-world AI problems. |
+| [Data&nbsp;playbook](https://learn.microsoft.com/en-us/data-engineering/playbook/understanding-data-playbook) | The data playbook provides enterprise software engineers with solutions which contain code developed to solve real-world problems. Everything in the playbook is developed with, and validated by, some of Microsoft's largest and most influential customers and partners. |
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 ### Resource links
 
 This solution accelerator deploys the following resources. It's critical to comprehend the functionality of each. Below are the links to their respective documentation: