Fixed torch.nn.MultiMarginLoss equation format error (#59188)
Summary:
Removed the extra parenthesis from the right side
Fixes https://github.com/pytorch/pytorch/issues/58634
Pull Request resolved: https://github.com/pytorch/pytorch/pull/59188
Reviewed By: ngimel
Differential Revision: D28797720
Pulled By: jbschlosser
fbshipit-source-id: 47e3084526389e7d1cc17c1a01b253e666c58784
