Float comparison adjustment

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

activesupport/test/notifications_test.rb

@@ -200,7 +200,7 @@ def test_events_are_initialized_with_details
 
       assert_equal    :foo, event.name
       assert_equal    time, event.time
-      assert_in_delta 10.0, event.duration, 0.00000000000001
+      assert_in_delta 10.0, event.duration, 0.00001
     end
 
     def test_events_consumes_information_given_as_payload