pytorch

bfa76ff4 - [Doc] Clarify that variance estimor is biaised for normalization layers (#39752)

[Doc] Clarify that variance estimor is biaised for normalization layers (#39752) Summary: Closes https://github.com/pytorch/pytorch/issues/39330 Pull Request resolved: https://github.com/pytorch/pytorch/pull/39752 Differential Revision: D21980097 Pulled By: ngimel fbshipit-source-id: 2bdcb8bf8194768985f5a8787712d215c0c5c1ec