Update README.rst

Author: Mathieu Bernard

README.rst

@@ -10,7 +10,7 @@ ABX discrimination is a term that is used for three stimuli presented on an ABX
 
 This package contains the operations necessary to initialize, calculate and analyse the results of an ABX discrimination task.
 
-**Check out the full documentation at `readthedocs <http://abxpy.readthedocs.org/en/latest/ABXpy.html>`_.**
+Check out the full documentation at `readthedocs <http://abxpy.readthedocs.org/en/latest/ABXpy.html>`_.
 
 Organisation
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