update help for AAS Skus (#12895)

* update help for AAS Skus

* update change log

* Update ChangeLog.md

Remove the doc change description

Co-authored-by: Po-Yu Chuang <[email protected]>
Co-authored-by: Jin Lei <[email protected]>

Author: 3 people

src/AnalysisServices/AnalysisServices/help/New-AzAnalysisServicesServer.md

@@ -187,7 +187,7 @@ Accept wildcard characters: False
 
 ### -Sku
 The name of the Sku for the server.
-The supported values are 'S0', 'S1', 'S2', 'S4' for the Standard tier; 'B1', 'B2' for the Basic tier and 'D1' for Development tier.
+The supported values are 'S0', 'S1', 'S2', 'S4', 'S8', 'S9', 'S8v2', 'S9v2' for the Standard tier; 'B1', 'B2' for the Basic tier and 'D1' for Development tier.
 
 ```yaml
 Type: System.String

src/AnalysisServices/AnalysisServices/help/Set-AzAnalysisServicesServer.md

@@ -237,7 +237,7 @@ Accept wildcard characters: False
 
 ### -Sku
 The name of the Sku for the server.
-The supported values are 'S0', 'S1', 'S2', 'S4' for the Standard tier; 'B1', 'B2' for the Basic tier and 'D1' for Development tier.
+The supported values are 'S0', 'S1', 'S2', 'S4', 'S8', 'S9', 'S8v2', 'S9v2' for the Standard tier; 'B1', 'B2' for the Basic tier and 'D1' for Development tier.
 
 ```yaml
 Type: System.String