Update tsconfig example in README

[simjes]

Update tsconfig.json in README to reflect that @types/testing-library__cypress is a dependency, and should not have to be installed by the user.

[kentcdodds]

Because it appears in node_modules/@types/ we actually shouldn't have to do anything at all right? We can remove this section entirely I think.

[simjes]

I would think so as well, but that doesn't seem to be the case. I did some research on this, and it seems typescript can't automatically pull in typings for globals. Correct me if I'm wrong.

cypress-io/cypress#1236
https://www.typescriptlang.org/docs/handbook/tsconfig-json.html#types-typeroots-and-types
https://www.typescriptlang.org/docs/handbook/module-resolution.html

[kentcdodds]

I've confirmed that typings are needed, however it works whether you use @types/testing-library__cypress or @testing-library/cypress. I'm not sure why it works with @testing-library/cypress, but I think it'd probably be better to reference @types/testing-library__cypress personally...

[simjes]

Sounds good, I will close it. It works with @testing-library/cypress because of the paths mapping in the tsconfig.json in DefinitelyTyped