refactor(core): Add correct payment folder export

packages/core/src/config/index.ts

@@ -21,9 +21,9 @@ export * from './order/custom-order-process';
 export * from './order/order-code-strategy';
 export * from './order/order-merge-strategy';
 export * from './order/price-calculation-strategy';
-export * from './payment-method/custom-payment-process';
-export * from './payment-method/example-payment-method-handler';
-export * from './payment-method/payment-method-handler';
+export * from './payment/custom-payment-process';
+export * from './payment/example-payment-method-handler';
+export * from './payment/payment-method-handler';
 export * from './promotion';
 export * from './session-cache/session-cache-strategy';
 export * from './session-cache/noop-session-cache-strategy';