DOC add blank line in matlab examples

Author: Mathieu Dubois

doc/devel/matlab_example1.py

@@ -44,4 +44,4 @@ def _run_interface(self, runtime):
     def _list_outputs(self):
         outputs = self._outputs().get()
         outputs['out_file'] = os.path.abspath(self.inputs.out_file)
-        return outputs
+        return outputs

doc/devel/matlab_example2.py

@@ -51,4 +51,4 @@ def run(self, **inputs):
 
     def _list_outputs(self):
         outputs = self._outputs().get()
-        return outputs
+        return outputs