fix($typescript): Fix typo in TypeScript definition file

[tcudok]

Noticed a small typo in index.d.ts - Recrod -> Record.

For now I'm using this as a workaround:

type Recrod<K extends string, T> = Record<K, T>;

but it would be nice to get this fixed :)

[miltonbecker]

@faceyspacey pleaaase merge this :)

[faceyspacey]

thanks!