Fix torchrec tutorial spacing (#3073) #3071

Job	Run time
pytorch_tutorial_build_worker (1, 15, linux.g5.12xlarge.nvidia.gpu)	15m 34s
pytorch_tutorial_build_worker (2, 15, linux.g5.4xlarge.nvidia.gpu)	52m 17s
pytorch_tutorial_build_worker (3, 15, linux.g5.4xlarge.nvidia.gpu)	20m 5s
pytorch_tutorial_build_worker (4, 15, linux.g5.4xlarge.nvidia.gpu)	29m 22s
pytorch_tutorial_build_worker (5, 15, linux.g5.4xlarge.nvidia.gpu)	21m 6s
pytorch_tutorial_build_worker (6, 15, linux.g5.4xlarge.nvidia.gpu)	18m 44s
pytorch_tutorial_build_worker (7, 15, linux.4xlarge.nvidia.gpu)	20m 43s
pytorch_tutorial_build_worker (8, 15, linux.4xlarge.nvidia.gpu)	21m 20s
pytorch_tutorial_build_worker (9, 15, linux.4xlarge.nvidia.gpu)	33m 59s
pytorch_tutorial_build_worker (10, 15, linux.4xlarge.nvidia.gpu)	24m 58s
pytorch_tutorial_build_worker (11, 15, linux.4xlarge.nvidia.gpu)	31m 27s
pytorch_tutorial_build_worker (12, 15, linux.4xlarge.nvidia.gpu)	26m 51s
pytorch_tutorial_build_worker (13, 15, linux.4xlarge.nvidia.gpu)	21m 8s
pytorch_tutorial_build_worker (14, 15, linux.4xlarge.nvidia.gpu)	14m 12s
pytorch_tutorial_build_worker (15, 15, linux.4xlarge.nvidia.gpu)	21m 44s
pytorch_tutorial_build_manager	19m 44s
	6h 33m 14s

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