diff --git a/docs/useful.md b/docs/useful.md
index 3ef1c204ad39c61229755946eae7c66a5be107d6..7950989ee8a9a72ea4c84eb0275886bbd6495eba 100644
--- a/docs/useful.md
+++ b/docs/useful.md
@@ -18,4 +18,4 @@ https://blog.floydhub.com/long-short-term-memory-from-zero-to-hero-with-pytorch/
 https://discuss.pytorch.org/t/lstm-text-generator-repeats-same-words-over-and-over/43652/7
 https://karpathy.github.io/2015/05/21/rnn-effectiveness/
 https://mlexplained.com/2019/02/15/building-an-lstm-from-scratch-in-pytorch-lstms-in-depth-part-1/
-https://machinelearningmastery.com/faq/single-faq/what-is-the-difference-between-samples-timesteps-and-features-for-lstm-input/
\ No newline at end of file
+https://machinelearningmastery.com/faq/single-faq/what-is-the-difference-between-samples-timesteps-and-features-for-lstm-input/