docs(srv): update

Author: SamyOubouaziz

serverless/containers/how-to/test-a-container.mdx

@@ -38,3 +38,7 @@ This page shows you how to execute Serverless Containers from the [Scaleway cons
 8. Click **Run**.
 
 The **Output** section displays the response from your container and the status code.
+
+<Message type="note">
+If you encounter a message error while testing your container, refer to the [dedicated troubleshooting](/serverless/containers/troubleshooting/tests-fail-on-private-container/) for more information.
+</Message>

serverless/functions/how-to/test-a-function.mdx

@@ -38,3 +38,7 @@ This page shows you how to execute Serverless Functions from the [Scaleway conso
 8. Click **Run**.
 
 The **Output** section displays the response from your function and the status code.
+
+<Message type="note">
+If you encounter a message error while testing your function, refer to the [dedicated troubleshooting](/serverless/functions/troubleshooting/tests-fail-on-private-function/) for more information.
+</Message>