add deepwiki link

Author: darixsamani

README.md

@@ -3,6 +3,7 @@
 [![FastAPI](https://img.shields.io/badge/FastAPI-async%20framework-009688?style=flat&logo=fastapi)](https://fastapi.tiangolo.com/)
 [![PostgreSQL](https://img.shields.io/badge/Database-PostgreSQL-336791?style=flat&logo=postgresql)](https://www.postgresql.org/)
 [![Docker](https://img.shields.io/badge/Deployed%20With-Docker-2496ED?style=flat&logo=docker)](https://www.docker.com/)
+[![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/darixsamani/fastapi-postgres)
 [![License](https://img.shields.io/badge/License-MIT-green.svg)](LICENSE)
 [![Status](https://img.shields.io/badge/Status-Stable-success)]()