Add Mintlify docs badge to README

Author: npow

README.md

@@ -2,7 +2,7 @@
 
 [![CI](https://github.com/npow/kompact/actions/workflows/ci.yml/badge.svg)](https://github.com/npow/kompact/actions/workflows/ci.yml)
 [![PyPI](https://img.shields.io/pypi/v/kompact.svg)](https://pypi.org/project/kompact/)
-[![Python 3.10+](https://img.shields.io/badge/python-3.10%2B-blue.svg)](https://www.python.org/downloads/)
+[![Python 3.10+](https://img.shields.io/badge/python-3.10%2B-blue.svg)](https://www.python.org/downloads/) [![Docs](https://img.shields.io/badge/docs-mintlify-18a34a?style=flat-square)](https://mintlify.com/npow/kompact)
 
 Context compression proxy for LLM agents. Reduces token usage 40-70% with zero code changes.