docs(README): fix links to the 'contributing' docs
docs(README): fix links to the 'contributing' docs

Co-authored-by: caienlei <9cdcfc776a322e9eb0743a88684625b5f0b1287a@xiaomi.com>
PR #2565
rstacruz/pnpm,pnpm/pnpm,rstacruz/pnpm,pnpm/pnpm,rstacruz/pnpm,pnpm/pnpm