message: Correct policyinsights codeowner
diff: /specification/operationalinsights/ @sw47
  /specification/operationsmanagement/ @dashimi16
  /specification/peering/ @rileymckenna
  -/specification/policyinsights/ @cheggert
  +/specification/policyinsights/ @pilor
  /specification/postgresql/ @qingqingyuan
  /specification/powerbidedicated/ @tarostok
  /specification/provisioningservices/ @kvish
  