fix: correct path to internal types

[crookedneighbor]

Was getting typescript compilation errors when using the module:

npm run typescript

> [email protected] typescript
> tsc --declaration

node_modules/@scryfall/api-types/src/objects/Card/values/ImageUris.ts:1:21 - error TS2307: Cannot find module 'src/internal' or its corresponding type declarations.

1 import { Uri } from "src/internal";
                      ~~~~~~~~~~~~~~

node_modules/@scryfall/api-types/src/objects/Card/values/PurchaseUris.ts:1:21 - error TS2307: Cannot find module 'src/internal' or its corresponding type declarations.

1 import { Uri } from "src/internal";
                      ~~~~~~~~~~~~~~

node_modules/@scryfall/api-types/src/objects/Card/values/RelatedUris.ts:1:21 - error TS2307: Cannot find module 'src/internal' or its corresponding type declarations.

1 import { Uri } from "src/internal";
                      ~~~~~~~~~~~~~~


Found 3 errors in 3 files.

Errors  Files
     1  node_modules/@scryfall/api-types/src/objects/Card/values/ImageUris.ts:1
     1  node_modules/@scryfall/api-types/src/objects/Card/values/PurchaseUris.ts:1
     1  node_modules/@scryfall/api-types/src/objects/Card/values/RelatedUris.ts:1

Correcting these paths to point to the correct relative path fixed the issue for me.