[automerger skipped] Fix LSTM documentation am: e61b7b98c9 am: efc839974b -s ours
am: d85c0b7a87 -s ours
am skip reason: change_id Id011783e33672ae65dc6fe3784cb26feb832acf9 with SHA1 e0537f09fb is in history

Change-Id: Iad2b86919ab603f38fe67d072c4fc059ae167ade