.circleci: Fix job-specs-custom docker tag (#41111)
Summary:
Should resolve master breakages
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/41111
Differential Revision: D22426863
Pulled By: seemethere
fbshipit-source-id: 561eaaa0d97a6fe13c75c1a73e4324b92d94afed
