retrieveLines returns a promise of a IList (#33895)
retrieveLines returns a promise of a IList (#33895)

According to the [Stripe documentation on invoice lines](https://stripe.com/docs/api/invoices/invoice_lines), the return value is a list, not a IInvoiceLineItem.
georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,borisyankov/DefinitelyTyped,borisyankov/DefinitelyTyped,dsebastien/DefinitelyTyped,markogresak/DefinitelyTyped,georgemarshall/DefinitelyTyped,mcliment/DefinitelyTyped