Fix mail address

README.rst

@@ -203,9 +203,9 @@ Contact
 
 For questions or reporting issues to this software package, contact our
 development team by asking your question on `stackoverflow`_  and with the tag *python-bob*.
-You can also contact the first author at 
+You can also contact the first author_.
 
-.. _Laurent Colbois: laurent.colbois@idiap.ch
+.. _author: laurent.colbois@idiap.ch
 
 .. Place your references here:
 .. _bob: https://www.idiap.ch/software/bob