Update 7 files

- /MLCommons/training_results_v3.1/NVIDIA/benchmarks/bert/implementations/pytorch/benchmark_scripts/README.md
- /MLCommons/training_results_v3.1/NVIDIA/benchmarks/bert/implementations/pytorch/benchmark_scripts/bert_3.1.def
- /MLCommons/training_results_v3.1/NVIDIA/benchmarks/bert/implementations/pytorch/benchmark_scripts/parallel_create_hdf5.sh
- /MLCommons/training_results_v3.1/NVIDIA/benchmarks/bert/implementations/pytorch/benchmark_scripts/prepare_data.sh
- /MLCommons/training_results_v3.1/NVIDIA/benchmarks/bert/implementations/pytorch/benchmark_scripts/prepare_packed_data.sh
- /MLCommons/training_results_v3.1/NVIDIA/benchmarks/bert/implementations/pytorch/benchmark_scripts/run_bert_n1g8.sh
- /MLCommons/training_results_v3.1/NVIDIA/benchmarks/bert/implementations/pytorch/benchmark_scripts/run_prepare_data.sh