rename numpy in test to pass validation tests

Author: antonwolfy

tests/third_party/cupy/math_tests/test_arithmetic.py

@@ -335,7 +335,7 @@ def test_binary(self):
             self.use_dtype
             and numpy.lib.NumpyVersion(numpy.__version__) < "1.10.0"
         ):
-            raise unittest.SkipTest("Test for numpy>=1.10")
+            raise unittest.SkipTest("NumPy>=1.10")
         self.check_binary()