Minor bug fix in the warning message (#61127)
Summary:
The current example code does not work. The correct one is like this: https://github.com/pytorch/pytorch/blob/cb7d813275a13a4233951e7cbcbb8351dbb0fd87/torch/distributed/run.py#L266
Pull Request resolved: https://github.com/pytorch/pytorch/pull/61127
Reviewed By: cbalioglu
Differential Revision: D29572003
Pulled By: mrshenli
fbshipit-source-id: 05b470230f3d70f8a6164edb5f92894a1112069f
