[Robust Speech Challenge] Add timeline (#15274)

examples/research_projects/robust-speech-event/README.md

@@ -82,12 +82,7 @@ You should have received an invite by email. If you didn't receive an invite, pl
 
 ## Important dates
 
-- **12.01.** Official announcement of the community event. Make sure to sign-up in [this google form](TODO: )
-- **12.01. - 19.01.** Participants sign up for the event.
-- **19.01.** Release of all relevant guides and training scripts.
-- **24.01.** Start of the community week! OVH & Hugging Face gives access to GPUs.
-- **24.01. - 07.02.** The OVH & Hugging Face team will be available for any questions, problems the participants might have.
-- **07.02.** Access to GPU is deactivated and community week officially ends.
+![timeline](https://github.com/patrickvonplaten/scientific_images/raw/master/Robush%20Speech%20Challenge.png)
 
 
 ## Data and preprocessing