[recipe][perf] fix: format llama31 perf recipes

Signed-off-by: yaoyu-33 <yaoyu.094@gmail.com>

Author: yaoyu-33

src/megatron/bridge/perf_recipes/llama/b200/llama31.py

@@ -137,6 +137,7 @@ def llama31_405b_pretrain_128gpu_b200_nvfp4_config() -> ConfigContainer:
 
 llama31_405b_pretrain_256gpu_b200_fp8mx_config = llama31_405b_pretrain_256gpu_gb200_fp8mx_config
 
+
 def llama31_405b_pretrain_256gpu_b200_nvfp4_config() -> ConfigContainer:
     """Llama3.1 405B pretrain: 256x B200, NVFP4."""
     cfg = llama31_405b_pretrain_256gpu_gb200_nvfp4_config()

src/megatron/bridge/perf_recipes/llama/b300/llama31.py

@@ -145,6 +145,7 @@ def llama31_405b_pretrain_256gpu_b300_bf16_config() -> ConfigContainer:
     cfg.model.gradient_accumulation_fusion = True
     return cfg
 
+
 llama31_405b_pretrain_256gpu_b300_fp8cs_config = llama31_405b_pretrain_256gpu_gb300_fp8cs_config
 
 llama31_405b_pretrain_256gpu_b300_fp8mx_config = llama31_405b_pretrain_256gpu_gb300_fp8mx_config

src/megatron/bridge/perf_recipes/llama/vr200/llama31.py

@@ -25,6 +25,7 @@
 
 llama31_405b_pretrain_256gpu_vr200_fp8mx_config = llama31_405b_pretrain_256gpu_gb200_fp8mx_config
 
+
 def llama31_405b_pretrain_256gpu_vr200_nvfp4_config() -> ConfigContainer:
     """Llama3.1 405B pretrain: 256x VR200, NVFP4."""
     cfg = llama31_405b_pretrain_256gpu_gb200_nvfp4_config()