transformers

2801d7bc - update doc (#34478)

update doc (#34478) * update doc * Update docs/source/en/perf_train_cpu.md Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com> * delete closing tip --------- Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com>