[FR][doc] Update README with reference to Flight Recorder (pytorch#599)

Summary:
Update readme with reference to the flight recorder tutorial to help
users diagnose stuck jobs.

Test Plan:
none.

README.md

@@ -129,6 +129,14 @@ If your gpu count per node is not 8, adjust:
 
 in the SBATCH command section.
 
+
+## Debugging
+### Troubleshooting Jobs that Timeout
+If you encounter jobs that timeout, you'll need to debug them to identify the root cause. To help with this process, we've enabled Flight Recorder, a tool that continuously collects diagnostic information about your jobs.
+When a job times out, Flight Recorder automatically generates dump files on every rank containing valuable debugging data. You can find these dump files in the `job.dump_folder` directory.
+To learn how to analyze and diagnose issues using these logs, follow our step-by-step tutorial [link](https://pytorch.org/tutorials/prototype/flight_recorder_tutorial.html).
+
+
 ## License
 
 This code is made available under [BSD 3 license](./LICENSE). However you may have other legal obligations that govern your use of other content, such as the terms of service for third-party models, data, etc.