message: update assignemnt config
diff: - fengzhou-msft
  - yungezz
  +- rule:
  + path: "specification/resources/**"
  + reviewers:
  + - raych1
  +
  - rule:
  paths:
  - "specification/machinelearningservices/**"
  reviewers:
  - ArcturusZhang
  +- rule:
  + paths:
  + - "specification/@(azureactivedirectory|appplatform)/**"
  + reviewers:
  + - njuCZ
  +
  - rule:
  paths:
  - "specification/authorization/**"
  - ".azure-pipelines-preproduction/**"
  reviewers:
  - akning-ms
  - - ruowan
  - NullMDR
  + - raych1
  - rule:
  # manager-plane PR
  - leni-msft
  - qianwens
  - allenjzhang
  + - ruowan
  