Update _app.js

Author: pomber

pages/_app.js

@@ -18,7 +18,7 @@ function MyApp({ Component, pageProps }) {
           <a href="https://stripe.com/docs/checkout/quickstart">Stripe Docs</a>.
         </strong>{" "}
         <br />
-        Made using <a href="https://codehike.org">Code Hike</a>.
+        Made using <a href="https://codehike.org">Code Hike</a>. Code <a href="https://github.com/code-hike/not-stripe">available on GitHub</a>.
       </div>
       <article>
         <div>