forward pass in layer 1

[wanli-19]

level6_new = normalized_betas[layer][0][2] * level6_new_1 + normalized_betas[layer][1][2] * level6_new_2 seems not correct.

i think it should be
level6_new = normalized_betas[layer][0][2] * level6_new_1 + normalized_betas[layer][1][1] * level6_new_2