DeepSpeed

d56268f3 - fixing default communication_data_type for bfloat16_enabled and docs (#3370)

fixing default communication_data_type for bfloat16_enabled and docs (#3370) Co-authored-by: Alexander Jipa <azzhipa@amazon.com> Co-authored-by: Olatunji Ruwase <olruwase@microsoft.com> Co-authored-by: Logan Adams <114770087+loadams@users.noreply.github.com>