docs: add tan31989 as a contributor for code (#1820)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

Co-authored-by: Subhrodip Mohanta <hello@subho.xyz>
Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

allcontributors[bot] committed 4y ago

be72a96cd615e0864e1e39cb998689e1f7666191

Parent: be25c0b

Committed by GitHub <noreply@github.com> on 9/28/2021, 6:41:14 PM