fix typo in binary_build_script (#61016)
Summary:
resolve comments in https://github.com/pytorch/pytorch/issues/60849
Pull Request resolved: https://github.com/pytorch/pytorch/pull/61016
Reviewed By: samestep
Differential Revision: D29487908
Pulled By: janeyx99
fbshipit-source-id: 32feb6c6e1009324201e3d2c6fcd9a7388791401
