Write twice "retry" in README #63
Description
https://github.com/malcommac/Hydra/blob/d12500aaf1685b338231f03cdfa49c4aa01858a3/README.md
in README.md, retry is written twice in line 20.It is good to match because the order is different from Index.
https://github.com/malcommac/Hydra/blob/d12500aaf1685b338231f03cdfa49c4aa01858a3/README.md#all-features
There is no retry in All Feature.