message: update typescript.md in network
diff: @@ -15,6 +15,13 @@ typescript:
  typescript:
  package-name: "@azure/arm-network"
  output-folder: "$(typescript-sdks-folder)/sdk/network/arm-network"
  +
  +directive:
  +- from: ddosProtectionPlan.json
  + where-model: DdosProtectionPlanPropertiesFormat
  + rename-property:
  + from: publicIPAddresses
  + to: publicIpAddresses
  ```
  ### Profile: profile-hybrid-2019-03-01
  