update docs structure

docs/source/index.rst

@@ -58,9 +58,9 @@ A step by step guide on getting started with smodex package
    guide/climatology.rst
    guide/anomalies.rst
    guide/contributing.rst 
-
-.. toctree::
-   :maxdepth: 2
-   :hidden:
-   :caption: Anomalies:
    
+smodex license
+--------------
+the smodex package is release under the MIT No-Attribution license. 
+
+.. _`MIT license`: https://gitlab.inf.unibz.it/earth_observation_public/smodex/-/blob/master/LICENSE?ref_type=heads