[Benchmark] Update welford torch.compile function name (#1029)

Author: yf225

benchmarks/run.py

@@ -467,8 +467,8 @@ class RunResult:
         "eager_layer_norm": "baseline",
         "triton_welford-speedup": "triton_speedup",
         "triton_welford-accuracy": "triton_accuracy",
-        "torch_compile_layer_norm-speedup": "torch_compile_speedup",
-        "torch_compile_layer_norm-accuracy": "torch_compile_accuracy",
+        "torch_compile_welford-speedup": "torch_compile_speedup",
+        "torch_compile_welford-accuracy": "torch_compile_accuracy",
         "helion_welford-speedup": "helion_speedup",
         "helion_welford-accuracy": "helion_accuracy",
     },