Update out-of-date comment on Docker image updates. (#32224)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/32224
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Test Plan: Imported from OSS
Differential Revision: D19416878
Pulled By: ezyang
fbshipit-source-id: 0205d0635658a3328128dcaad94bbbef505342be
