docs: add contributor whc2001

[tinymins]

@all-contributors please add @whc2001 for code

[tinymins]

@all-contributors please add @whc2001 for code

[allcontributors]

@tinymins

I've put up a pull request to add @whc2001! 🎉

[tinymins]

@all-contributors please add @tinymins for code

[allcontributors]

@tinymins

I've put up a pull request to add @tinymins! 🎉