Unify sample function in docs

Author: kwiatekus

docs/02-get-started/02-deploy-expose-function.md

@@ -176,7 +176,7 @@ Run:
 curl https://hello-world.$CLUSTER_DOMAIN
 ```
 
-The operation was successful if the call returns `Hello Serverless`.
+The operation was successful if the call returns `Hello World from the Kyma Function hello-world running on nodejs18!`.
 
   </details>
 </div>