Update documentation URL

Author: jbdurand

README.md

@@ -2,7 +2,7 @@
 
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-[![Docs](https://readthedocs.org/projects/stat_tool/badge/?version=latest)](https://stat_tool.readthedocs.io/)
+[![Docs](https://readthedocs.org/projects/stat_tool/badge/?version=latest)](https://stat-tool.readthedocs.io/)
 [![Build Status](https://github.com/openalea/stat_tool/actions/workflows/conda-package-build.yml/badge.svg?branch=main)](https://github.com/openalea/stat_tool/actions/workflows/conda-package-build.yml?query=branch%3Amaster)
 [![License](https://img.shields.io/badge/License--CeCILL-C-blue)](https://www.cecill.info/licences/Licence_CeCILL-C_V1-en.html)
 [![Anaconda-Server Badge](https://anaconda.org/openalea3/stat_tool/badges/version.svg)](https://anaconda.org/openalea3/stat_tool)