Update sample_tickets.json

sample_tickets.json

@@ -1,7 +1,7 @@
-{{"message": "My laptop is broken"},
+{"message": "My laptop is broken"},
 {"message": "I already tried to call many times. Can I get a meeting with Jonas?"},
 {"message": "Can you send your models via email?"},
 {"message": "We should do a research collaboration."},
 {"message": "H100 cluster available right now. Would you like to procure at low prices?"},
 {"message": "My company has been working on time series and signal processing for a long time. It would make sense to define a joint go to market." }, 
-{"message": "Full stack developer in your area available now."}}
+{"message": "Full stack developer in your area available now."}