Small change to phone typings (#10748)

phone typings where exported as default,
it seems like it is not fully compitable.
changed to export =.

phone/index.d.ts

@@ -3,4 +3,5 @@
 // Definitions by: Hagai Cohen <https://github.com/DxCx>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-export default function phone(phoneNumber: string, countryCode?: string): Array<string>;
+declare function phone(phoneNumber: string, countryCode?: string): Array<string>;
+export = phone;

phone/phone-tests.ts

@@ -1,4 +1,4 @@
-import phone from 'phone';
+import phone = require('phone');
 
 phone('+852 6569-8900'); // return ['+85265698900', 'HKG']
 phone('(817) 569-8900'); // return ['+18175698900, 'USA']