fix link to issue #500

Jud White

2018-03-25 8b7121b34a95dfde83f696b9cb11eb0d1c7ac4af

 src/network_kernels.cu

@@ -121,7 +121,7 @@
   }
#endif
    forward_network_gpu(net, state);
   cudaStreamSynchronize(get_cuda_stream());
   //cudaStreamSynchronize(get_cuda_stream());
    backward_network_gpu(net, state);
}