[CUDA graphs] Fixes make_graphed_callables example typos (#69379)
Summary:
cc mcarilli
Pull Request resolved: https://github.com/pytorch/pytorch/pull/69379
Reviewed By: mruberry
Differential Revision: D32841260
Pulled By: ngimel
fbshipit-source-id: a7d0b9db0578526907547b201eddd55827812b63
