DeepSpeed

c83ade6f - fix an outdated doc wrt CUDA_VISIBLE_DEVICES (#7058)

fix an outdated doc wrt CUDA_VISIBLE_DEVICES (#7058) @jeffra and I fixed this many years ago, so bringing this doc to a correct state. --------- Signed-off-by: Stas Bekman <stas@stason.org> Signed-off-by: Logan Adams <loadams@microsoft.com>