Align Dict str() with the format in FunctionSchema (#23200)
Summary:
Old: Dict[int, str]
New: Dict(int, str)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/23200
ghstack-source-id: 87125581
Reviewed By: zrphercule
Differential Revision: D16432159
fbshipit-source-id: a3dc5fa397697a53e78290d25e19589f757c1eb8
