added broken link fix

Author: JustPies

articles/machine-learning/prompt-flow/troubleshoot-guidance.md

@@ -146,7 +146,7 @@ You may encounter 409 error from Azure OpenAI, it means you have reached the rat
 
         In this case, if you find the message `request canceled` in the logs, it might be because the OpenAI API call is taking too long and exceeding the timeout limit.
 
-        An OpenAI API timeout could be caused by a network issue or a complex request that requires more processing time. For more information, see [OpenAI API timeout](https://help.openai.com/en/articles/6897186-timeout).
+        An OpenAI API timeout could be caused by a network issue or a complex request that requires more processing time. For more information, see [OpenAI API timeout](https://platform.openai.com/docs/actions/production#timeouts).
 
         Wait a few seconds and retry your request. This action usually resolves any network issues.