Update ChangeLog.md

Author: DaeunYim

ChangeLog.md

@@ -52,10 +52,6 @@ Supported -EnableNoPublicIP when creating a Databricks workspace
 #### Az.KeyVault
 * Supported specifying key type and curve name when importing keys via a BYOK file
 
-#### Az.MySql
-* Added maintenance windows parameter to Update-AzMySqlFlexibleServer cmdlet
-* Added zone parameter to server New-AzMySqlFlexibleServer cmdlet.
-
 #### Az.Network
 * Added new cmdlets to replace old product name 'virtual router' with new name 'route server' in the future.
     - 'New-AzRouteServer'
@@ -73,6 +69,10 @@ Supported -EnableNoPublicIP when creating a Databricks workspace
 #### Az.PolicyInsights
 * Retracted changes made in powershell that increased request row limit. Removed incorrect statement of supporting paging
 
+#### Az.PostgreSql
+* Added maintenance windows parameter to Update-AzPostgreSqlFlexibleServer cmdlet
+* Added zone parameter to server New/Restore-PostgresSqlFlexibleServer cmdlet.
+
 #### Az.RecoveryServices
 * modified policy validation limits as per backup service.
 * Added Zone Redundancy for Recovery Service Vaults.