Minor changes to documentation

docs/index.rst

@@ -1,15 +1,10 @@
-.. optilab documentation master file, created by
-   sphinx-quickstart on Sat Dec  7 23:13:57 2024.
-   You can adapt this file completely to your liking, but it should at least
-   contain the root `toctree` directive.
-
 optilab documentation
 =====================
-Optilab is a python framework for black-box optimization.
+Optilab is a python framework for black-box optimization. To learn more visit the official repository of this project at `github <https://github.com/mlojek/optilab>`_.
 
 .. toctree::
    :maxdepth: 2
    :caption: Contents:
 
-   modules
+   optilab