[package] fix tutorial link (#60113)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/60113
The tutorial link in the docs was to an fb-only colab.
Test Plan: Imported from OSS
Reviewed By: SplitInfinity
Differential Revision: D29169818
Pulled By: suo
fbshipit-source-id: 374807c234a185bd515b8ffe1300e6cf8d821636
