Fix documentation badge link in README.md

Author: Simon-Reynaert

README.md

@@ -1,7 +1,7 @@
 [![Project Status: WIP – Initial development is in progress, but there has not yet been a stable, usable release suitable for the public.](https://www.repostatus.org/badges/latest/wip.svg)](https://www.repostatus.org/#wip)
 [![Tests Passing](https://github.com/Simon-Reynaert/iEcology-IAS-miner/actions/workflows/tests.yml/badge.svg?branch=main)](https://github.com/Simon-Reynaert/iEcology-IAS-miner/actions/workflows/tests.yml)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
-[![Docs](https://readthedocs.org/projects/iecology-ias-miner/badge/?version=latest)](https://iecology-ias-miner.readthedocs.io/en/latest/)
+[![Docs](https://readthedocs.org/projects/iecology-ias-miner/badge/?version=latest)](https://iecology-ias-miner.readthedocs.io/en/latest/index)
 
 # iEcology-IAS-miner