Update distributed contributing guide to show how to run one test in test_distributed_spawn (#67801)
Summary:
Running one test in test_distributed_spawn is a bit confusing but possible. Add documentation to the CONTRIBUTING.md for this.
cc pietern mrshenli pritamdamania87 zhaojuanmao satgera rohan-varma gqchen aazzolini osalpekar jiayisuse SciPioneer H-Huang
Pull Request resolved: https://github.com/pytorch/pytorch/pull/67801
Reviewed By: mrshenli
Differential Revision: D32157700
Pulled By: rohan-varma
fbshipit-source-id: a1d10f2fb5f169b46c6d15149bf949082d9bd200