pytorch

3e2d2fc8 - [NCCL Docs] Adding Comments for Work-level Finish in ProcessGroup (#40404)

[NCCL Docs] Adding Comments for Work-level Finish in ProcessGroup (#40404) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/40404 Adds docs to the finish function in ProcessGroup::Work. It's better to have some documentation around these functions since we have some PR's with API-changes/optimizations for these work-level functions here and in the subclasses. ghstack-source-id: 106381736 Test Plan: CI (Docs change only) Differential Revision: D22174891 fbshipit-source-id: 7901ea3b35caf6f69f37178ca574104d3412de28