message: add xiaoxuqi as reviewer
diff: reviewers:
  - zhenglaizhang
  +- rule:
  + paths:
  + - "specification/videoanalyzer/resource-manager/**"
  + - "specification/cognitiveservices/resource-manager/**"
  + - "specification/dataprotection/**"
  + reviewers:
  + - xiaoxuqi-ms
  +
  - rule:
  paths:
  - "documentation/**"
  