[AzureAD] Correct PowerShell syntax

Author: iainfoulds

articles/active-directory/authentication/howto-mfa-reporting.md

@@ -126,13 +126,13 @@ First, ensure that you have the [MSOnline V1 PowerShell module](https://docs.mic
 Identify users who have registered for MFA using the PowerShell that follows. This set of commands excludes disabled users since these accounts cannot authenticate against Azure AD.
 
 ```powershell
-Get-MsolUser -All | Where-Object {$._StrongAuthenticationMethods -ne $null -and $._BlockCredential -eq $False} | Select-Object -Property UserPrincipalName
+Get-MsolUser -All | Where-Object {$_.StrongAuthenticationMethods -ne $null -and $_.BlockCredential -eq $False} | Select-Object -Property UserPrincipalName
 ```
 
 Identify users who have not registered for MFA using the PowerShell that follows. This set of commands excludes disabled users since these accounts cannot authenticate against Azure AD.
 
 ```powershell
-Get-MsolUser -All | Where-Object {$._StrongAuthenticationMethods.Count -eq 0 -and $._BlockCredential -eq $False} | Select-Object -Property UserPrincipalName
+Get-MsolUser -All | Where-Object {$_.StrongAuthenticationMethods.Count -eq 0 -and $_.BlockCredential -eq $False} | Select-Object -Property UserPrincipalName
 ```
 
 Identify users and output methods registered.