fix test

Author: chaoming0625

brainpy/math/operators/tests/test_op_register.py

@@ -114,7 +114,7 @@ def __init__(self, syn_class, scale=1.0, method='exp_auto', ):
 class TestOpRegister(unittest.TestCase):
   def test_op(self):
 
-    fig, gs = bp.visualize.get_figure(1, 1, 4, 5)
+    fig, gs = bp.visualize.get_figure(1, 2, 4, 5)
 
     net = EINet(ExponentialSyn, scale=1., method='euler')
     runner = bp.dyn.DSRunner(