chore: add grafana PR for this package

Author: RomanR-dev

README.md

@@ -5,6 +5,7 @@
 [![PyPI version](https://img.shields.io/pypi/v/python-logging-loki-v2.svg)](https://pypi.org/project/python-logging-loki-v2/)
 [![Python](https://img.shields.io/badge/python-3.9+-blue.svg)](https://www.python.org/)
 
+## Documented by Grafana: https://github.com/grafana/loki/pull/16397
 
 Send Python logs directly to [Grafana Loki](https://grafana.com/loki) with minimal configuration.