[C++ API] Link to module options doc for functional that has same options as module (#34752)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/34752
Test Plan: Imported from GitHub, without a `Test Plan:` line.
Differential Revision: D20452681
Pulled By: yf225
fbshipit-source-id: 06b56a08bd480999353ebbff39c035225e4070df
