[4h] Correct 5s documentation "Description of endpoints for RAG agent"

Correct 5s documentation "Description of endpoints for RAG agent"

после создания универсального endpoint внести корректировки в документ 5s documentation, который используется для работы RAG agent.

Find the '5s documentation' file referenced, likely in a docs/ directory. Locate the universal endpoint created and understand the RAG agent's interface. Update the documentation to accurately describe the endpoints. Verify changes by checking the documentation's format and the RAG agent's usage.

由索引模型根据 Issue 内容生成。