Black to Block for various files (#42913)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/41735 #41736 https://github.com/pytorch/pytorch/issues/41737 #41738 all areas where black is mentioned is replaced to block
Pull Request resolved: https://github.com/pytorch/pytorch/pull/42913
Reviewed By: houseroad
Differential Revision: D23112873
Pulled By: malfet
fbshipit-source-id: a515b56dc2ed20aa75741c577988d95f750b364c
