fixed a typo in one of the outputs

Author: chrisgorgo

nipype/interfaces/fsl/epi.py

@@ -663,7 +663,7 @@ def _list_outputs(self):
             outputs['fmap_epi'] = os.path.join(os.getcwd(),
                                                self.inputs.out_base + '_fieldmaprads2epi.nii.gz')
             outputs['fmap_str'] = os.path.join(os.getcwd(),
-                                               self.inputs.out_base + '_fieldmaprads2str.ni    `i.gz')
+                                               self.inputs.out_base + '_fieldmaprads2str.nii.gz')
             outputs['fmapmag_str'] = os.path.join(os.getcwd(),
                                                   self.inputs.out_base + '_fieldmap2str.nii.gz')
             outputs['shiftmap'] = os.path.join(os.getcwd(),