update new fsl_course_data link in docs

Author: oesteban

doc/devel/testing_nipype.rst

@@ -40,7 +40,7 @@ will reduce the number of skip tests.
 
 Some tests in Nipype make use of some images distributed within the `FSL course data
 <http://fsl.fmrib.ox.ac.uk/fslcourse/>`_. This reduced version of the package can be downloaded `here
-<https://3552243d5be815c1b09152da6525cb8fe7b900a6.googledrive.com/host/0BxI12kyv2olZVUswazA3NkFvOXM/nipype-fsl_course_data.tar.gz>`_.
+<https://files.osf.io/v1/resources/nefdp/providers/osfstorage/57f472cf9ad5a101f977ecfe>`_.
 To enable the tests depending on these data, just unpack the targz file and set the :code:`FSL_COURSE_DATA` environment
 variable to point to that folder.