[DOC] finish about us

docs/about/about.rst

@@ -7,3 +7,5 @@ We thank all the contributors for the development of learnware package:
 .. image:: https://github.com/Learnware-LAMDA/Learnware/graphs/contributors
    :align: center
 
+In LAMDA Group, also many people participate the discussions, learnware package design and development and so on. 
+For more details about us, please refer to `LAMDA Group <https://www.lamda.nju.edu.cn/>`_.