fix: Update MG location parameter name (#1228)

docs/wiki/Update-ALZ-Custom-Policies-to-Latest.md

@@ -243,7 +243,7 @@ For this scenario we will use the ALZ custom initiative _Deploy Diagnostic Setti
         if ($policyDefId -match '(\/\w+\/\w+\.\w+\/\w+\/)(\w+)(\/.+)') {
           $policyDefinitionName = $policyDefId.substring($policyDefId.lastindexof('/') + 1)
           $policyDefinitionPath = "./$($policyDefinitionName).json"
-          Invoke-WebRequest -Uri "https://raw.githubusercontent.com/Azure/Enterprise-Scale/main/src/resources/Microsoft.Authorization/policyDefinitions/$($policyDefinitionName).json" -OutFile $policyDefinitionPath
+          Invoke-WebRequest -Uri "https://raw.githubusercontent.com/Azure/Enterprise-Scale/main/src/resources/Microsoft.Authorization/policyDefinitions/$($policyDefinitionName).json" -OutFile $policySetDefinitionPath
           $policyDef = Get-Content $policyDefinitionPath | ConvertFrom-Json -Depth 100
           $policyName = $policyDef.name
           $displayName = $policyDef.properties.displayName
@@ -253,7 +253,7 @@ For this scenario we will use the ALZ custom initiative _Deploy Diagnostic Setti
           $parameters = $policyDef.properties.parameters | ConvertTo-Json -Depth 100
           $policyRule = $policyDef.properties.policyRule | ConvertTo-Json -Depth 100
           $policyRule = $policyRule.Replace('[[', '[')
-          New-AzPolicyDefinition -Name $policyName -DisplayName $displayname -Description $description -Policy $policyRule -Mode $mode -Metadata $metadata -Parameter $parameters -ManagementGroupName $policyDefinitionLocation
+          New-AzPolicyDefinition -Name $policyName -DisplayName $displayname -Description $description -Policy $policyRule -Mode $mode -Metadata $metadata -Parameter $parameters -ManagementGroupName $policySetDefinitionLocation
         }
       }
     }
@@ -266,8 +266,8 @@ For this scenario we will use the ALZ custom initiative _Deploy Diagnostic Setti
   $parameters = $policySetDef.properties.parameters | ConvertTo-Json -Depth 100
   $policyDefinitions = ConvertTo-Json -InputObject @($policySetDef.properties.policyDefinitions) -Depth 100
   $policyDefinitions = $policyDefinitions.Replace('[[', '[')
-  $policyDefinitions = $policyDefinitions -replace '(\/\w+\/\w+\.\w+\/\w+\/)(\w+)(\/.+)', "`${1}$policyDefinitionLocation`${3}"
-  New-AzPolicySetDefinition -Name $policyName -DisplayName $displayname -Description $description -PolicyDefinition $policyDefinitions -Metadata $metadata -Parameter $parameters -ManagementGroupName $policyDefinitionLocation
+  $policyDefinitions = $policyDefinitions -replace '(\/\w+\/\w+\.\w+\/\w+\/)(\w+)(\/.+)', "`${1}$policySetDefinitionLocation`${3}"
+  New-AzPolicySetDefinition -Name $policyName -DisplayName $displayname -Description $description -PolicyDefinition $policyDefinitions -Metadata $metadata -Parameter $parameters -ManagementGroupName $policySetDefinitionLocation
   ```
 
 > Note that if you decide on another approach from the script above, there are a number of double square brackets ('[[') in the file. These need to be replaced with single square brackets before the policy set definition is valid syntax.