pytorch

642469b7 - Fix examples in API doc

Fix examples in API doc Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/30856 Test Plan: Imported from OSS Differential Revision: D18847528 Pulled By: mrshenli fbshipit-source-id: 57f666d9d4b634fb77b1b65debd2b07e2bebd57a