docs(payments-plugin): Fix stripe docs code block

packages/payments-plugin/src/stripe/types.ts

@@ -59,6 +59,7 @@ export interface StripePluginOptions {
      *     }),
      *   ],
      * };
+     * ```
      *
      * Note: If the `paymentIntentCreateParams` is also used and returns a `metadata` key, then the values
      * returned by both functions will be merged.