Update Go and RN snippets to 0.2.9

snippets/react-native/send_payment.ts

@@ -2,6 +2,7 @@ import { sendPayment } from "@breeztech/react-native-breez-sdk"
 
 const exampleSendLightningPayment = async () => {
     // ANCHOR: send-payment
+	const bolt11 = "bolt11 invoice"
     // The `amountMsat` param is optional and should only passed if the bolt11 doesn't specify an amount.
     // The amountMsat is required in case an amount is not specified in the bolt11 invoice'.
     const amountMsat = 3000000