Pseudocode typo in output state

[adrianbg]

Hi

The current version of your paper on arxiv (https://arxiv.org/pdf/1709.02755.pdf) uses the forget gate in the output computation rather than the reset gate.

Based on your code and other formulas in the paper, it seems like it should say r there rather than f.

[kzjeef]

I found same error in paper.

@taolei87