[Migrating] Faulty link to dts-gen

[pjonsson]

What cheatsheet is this about? (if applicable)

Migrating cheatsheet

What's your issue or idea?

In the first bullet list in the "General Conversion approaches" section (https://react-typescript-cheatsheet.netlify.app/docs/migration/), sub-bullet 1 under "Level 2: Strict TypeScript", there is a link to dts-gen. That link leads to an archived repository.

The archived repository has this link in the README: https://github.com/microsoft/DefinitelyTyped-tools/tree/main/packages/dts-gen