docs: update Troubleshooting Guidelines section

Author: Anze1508

content/en/getting-started/help-and-support/index.md

@@ -217,8 +217,8 @@ To use LocalStack's diagnostics endpoint:
 - Set the environment variable `LS_LOG=trace`
 - Start LocalStack
 - Run the affected task(s)
-- Call the diagnostic endpoint `curl -s localhost:4566/_localstack/diagnose | gzip -cf > diagnose.json.gz` (Endpoint URL depends on your configuration)
-- Send the output file to our Slack chat
+- Call the diagnostic endpoint `curl -s localhost:4566/_localstack/diagnose > diagnose.json && zip diagnose.zip diagnose.json && rm diagnose.json` (Endpoint URL depends on your configuration)
+- Send the output file to us
 
 <span style="color: darkred;">**Ensure that you avoid sending the diagnostic output to public channels or forums, as it may contain sensitive information.**</span>
 {{< /callout >}}