fix: Correct filename in README.txt (#3357) #4376

Job	Run time
pytorch_tutorial_build_worker (5, 15, linux.g5.4xlarge.nvidia.gpu)	23m 23s
pytorch_tutorial_build_worker (1, 15, linux.g5.12xlarge.nvidia.gpu)	15m 30s
pytorch_tutorial_build_worker (4, 15, linux.g5.4xlarge.nvidia.gpu)	35m 11s
pytorch_tutorial_build_worker (3, 15, linux.g5.4xlarge.nvidia.gpu)	22m 39s
pytorch_tutorial_build_worker (7, 15, linux.g5.4xlarge.nvidia.gpu)	16m 11s
pytorch_tutorial_build_worker (12, 15, linux.g5.4xlarge.nvidia.gpu)	21m 31s
pytorch_tutorial_build_worker (9, 15, linux.g5.4xlarge.nvidia.gpu)	18m 27s
pytorch_tutorial_build_worker (2, 15, linux.g5.4xlarge.nvidia.gpu)	35m 22s
pytorch_tutorial_build_worker (8, 15, linux.g5.4xlarge.nvidia.gpu)	20m 55s
pytorch_tutorial_build_worker (6, 15, linux.g5.4xlarge.nvidia.gpu)	23m 0s
pytorch_tutorial_build_worker (10, 15, linux.g5.4xlarge.nvidia.gpu)	17m 16s
pytorch_tutorial_build_worker (11, 15, linux.g5.4xlarge.nvidia.gpu)	16m 3s
pytorch_tutorial_build_worker (13, 15, linux.g5.4xlarge.nvidia.gpu)	29m 22s
pytorch_tutorial_build_worker (14, 15, linux.g5.4xlarge.nvidia.gpu)	26m 48s
pytorch_tutorial_build_worker (15, 15, linux.g5.4xlarge.nvidia.gpu)	29m 14s
pytorch_tutorial_build_manager	22m 59s
	6h 13m 51s

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