Fixed "Show the app in the terminal" URL

The app is listening on port 8080 so that must be included otherwise port 80 (default) is used and the curl request will fail.

Issue: 41259

Author: craigcomstock

content/en/docs/tutorials/kubernetes-basics/explore/explore-intro.html

@@ -154,7 +154,7 @@ <h3>Show the app in the terminal</h3>
                 <p><code><b>export POD_NAME="$(kubectl get pods -o go-template --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}')"</b></code><br />
                 <code><b>echo Name of the Pod: $POD_NAME</b></code></p>
                 <p>To see the output of our application, run a <code>curl</code> request:</p>
-                <p><code><b>curl http://localhost:8001/api/v1/namespaces/default/pods/$POD_NAME/proxy/</b></code></p>
+                <p><code><b>curl http://localhost:8001/api/v1/namespaces/default/pods/$POD_NAME:8080/proxy/</b></code></p>
                 <p>The URL is the route to the API of the Pod.</p>
            </div>
         </div>