message: [Synapse] - add Swagger code owner
diff: /specification/storsimple8000series/ @manaas-microsoft
  /specification/streamanalytics/ @atpham256
  /specification/subscriptions/ @navysingla
  +/specification/synapse/ @idear1203
  /specification/timeseriesinsights/ @sandshadow
  /specification/trafficmanager/ @allencal @hrkulkarmsft
  /specification/web/ @naveedaz @Azure/azure-app-service-control-plane
  