docs: Update README with Document Processing Accelerator

Added Document Processing Accelerator section to README.

Author: Prajwal-Microsoft

README.md

@@ -198,7 +198,7 @@ You may want to consider additional security measures, such as:
 | [Document knowledge mining](https://github.com/microsoft/Document-Knowledge-Mining-Solution-Accelerator) | Process and extract summaries, entities, and metadata from unstructured, multi-modal documents and enable searching and chatting over this data. |
 | [Conversation knowledge mining](https://github.com/microsoft/Conversation-Knowledge-Mining-Solution-Accelerator) | Derive insights from volumes of conversational data using generative AI. It offers key phrase extraction, topic modeling, and interactive chat experiences through an intuitive web interface. |
 | [Document generation](https://github.com/microsoft/document-generation-solution-accelerator) | Identify relevant documents, summarize unstructured information, and generate document templates. |
-
+|[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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