Merge pull request #18584 from janisozaur/patch-2

Add exit code information to ssh connection test

content/authentication/connecting-to-github-with-ssh/testing-your-ssh-connection.md

@@ -56,4 +56,10 @@ When you test your connection, you'll need to authenticate this action using you
 
   {% endlinux %}
 
+   {% note %}
+
+   **Note:** The remote command should exit with code 1.
+
+   {% endnote %}
+
 4. Verify that the resulting message contains your username. If you receive a "permission denied" message, see ["Error: Permission denied (publickey)"](/articles/error-permission-denied-publickey).