Update clang-tidy install in CONTRIBUTING.md (#101247)
Updated clang-tidy install to reflect install command in github actions workflow https://github.com/pytorch/pytorch/blob/ce76670c6f7f64ac0f3dbe371fc64088fef47777/.github/workflows/lint.yml#L45
I was following steps to run clang-tidy and got into the above issue. I also think that the following line is outdated: https://github.com/pytorch/pytorch/blob/ce76670c6f7f64ac0f3dbe371fc64088fef47777/CONTRIBUTING.md?plain=1#L1077
but not sure what is the right solution there as there is no `clang_tidy/requirements.txt` file.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/101247
Approved by: https://github.com/subramen, https://github.com/kit1980
