fix absorption test

hysop/operator/tests/test_absorption.py

@@ -78,7 +78,7 @@ class TestVorticityAbsorption(object):
 
         self._test_one(shape=shape, dim=dim, dtype=dtype,
                        domain=domain, velo=velo, vorti=vorti,
-                       start_coord=random.random()*.8+.1)
+                       start_coord=random.random()*.7+.1)
 
     def _test_one(self, shape, dim, dtype,
                   domain, velo, vorti, start_coord):