The link to the documentation is dead (#335)

Author: SylvainCorlay

README.md

@@ -2,7 +2,7 @@
 <div align="center">
         
 [![Build Status](https://github.com/compiler-research/xeus-cpp/actions/workflows/main.yml/badge.svg)](https://github.com/compiler-research/xeus-cpp/actions/workflows/main.yml)
-[![Documentation Status](http://readthedocs.org/projects/xeus-cpp/badge/?version=latest)](https://xeus-cppreadthedocs.io/en/latest/?badge=latest)
+[![Documentation Status](http://readthedocs.org/projects/xeus-cpp/badge/?version=latest)](https://xeus-cpp.readthedocs.io/en/latest/?badge=latest)
 [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/compiler-research/xeus-cpp/main?urlpath=/lab/tree/notebooks/xeus-cpp.ipynb)
 [![codecov]( https://codecov.io/gh/compiler-research/xeus-cpp/branch/main/graph/badge.svg)](https://codecov.io/gh/compiler-research/xeus-cpp)