minor style edits to torch/testing/_internal/common_quantized.py (#44807)
Summary:
style nits
Pull Request resolved: https://github.com/pytorch/pytorch/pull/44807
Reviewed By: malfet
Differential Revision: D23742537
Pulled By: janeyx99
fbshipit-source-id: 446343822d61f8fd9ef6dfcb8e5da4feff6522b6
