[readme] minor

Author: nikohansen

readme.md

@@ -24,7 +24,7 @@ python -m pip install git+https://github.com/CMA-ES/pycomocma.git@master
 - [Code on Github](https://github.com/CMA-ES/pycomocma)
 - Documentation in
   - [apidocs format](https://cma-es.github.io/pycomocma/comocma-apidocs/index.html)
-  - [epydocs format](https://cma-es.github.io/pycomocma/comocma-epydocs/index.html)
+  - [epydocs format (outdated)](https://cma-es.github.io/pycomocma/comocma-epydocs/index.html)
 
 ## Testing of the `comocma` module