Update ml-agents/mlagents/trainers/tests/torch/saver/test_saver.py

Co-authored-by: Vincent-Pierre BERGES <vincentpierre@unity3d.com>

ml-agents/mlagents/trainers/tests/torch/saver/test_saver.py

     # asserts convolutions have same parameters after load
     for conv1, conv2 in zip(conv_params, conv_params2):
         assert torch.equal(conv1, conv2)
-    # asserts layers still  have different dimensions
+    # asserts layers still have different dimensions
     for mod1, mod2 in zip(policy.actor.parameters(), policy2.actor.parameters()):
         if mod1.shape[0] == 12:
             assert mod2.shape[0] == 10