Update link to example pytorch/examples (#66095)
Summary:
`https://github.com/goldsborough/examples/tree/cpp/cpp` -> `https://github.com/pytorch/examples/tree/master/cpp`
As C++ examples in https://github.com/pytorch/examples are more update
Partially addresses https://github.com/pytorch/pytorch/issues/65388
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66095
Reviewed By: janeyx99
Differential Revision: D31382888
Pulled By: malfet
fbshipit-source-id: 8884c7795386249dea07cbe66783fa1dd963e07c
