Update Get-AzSqlServerDnsAlias.md (#14737)

Aligned the casing of the commandlet name in the examples with the definition

Author: greglow-sdu

src/Sql/Sql/help/Get-AzSqlServerDnsAlias.md

@@ -24,7 +24,7 @@ Get the specific Azure SQL Server DNS Alias or lists all Server DNS Aliases for
 
 ### Example 1
 ```
-PS C:\> $serverDNSAliases = Get-AzSqlServerDNSAlias -ServerName servername -ResourceGroupName rgname
+PS C:\> $serverDNSAliases = Get-AzSqlServerDnsAlias -ServerName servername -ResourceGroupName rgname
 
 ResourceGroupName  ServerName   DnsAliasName
 -----------------  ----------   ------------------
@@ -36,7 +36,7 @@ Lists all Server DNS Aliases for the specific server
 
 ### Example 2
 ```
-PS C:\> $serverDNSAliases = Get-AzSqlServerDNSAlias -DnsAliasName dnsaliasname -ServerName servername -ResourceGroupName rgname
+PS C:\> $serverDNSAliases = Get-AzSqlServerDnsAlias -DnsAliasName dnsaliasname -ServerName servername -ResourceGroupName rgname
 
 ResourceGroupName  ServerName   DnsAliasName
 -----------------  ----------   ------------------
@@ -47,7 +47,7 @@ Gets Server DNS Alias specified by server and alias name
 
 ### Example 3
 ```
-PS C:\> $serverDNSAliases = Get-AzSqlServerDNSAlias -ServerName servername -ResourceGroupName rgname -DnsAliasName "dnsaliasname*"
+PS C:\> $serverDNSAliases = Get-AzSqlServerDnsAlias -ServerName servername -ResourceGroupName rgname -DnsAliasName "dnsaliasname*"
 
 ResourceGroupName  ServerName   DnsAliasName
 -----------------  ----------   ------------------