Fix error in powershell script in authority-information-access-retrieval.md

[dodexahedron (dodexahedron)]

The powershell snippet in this document used the wrong variable name in the switch statement ($value), making it never work propertly. Fixed by changing it to $regCheck.

Borked version has incorrect output because, in a clean session, $value is just $null, hitting the default case, but outputs "0" to the console, which is further confusing. If $value happens to already exist from earlier in the session, any one of the three cases of the switch statement or an exception are possible, depending on what it is, which is obviously also goodn't.

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[learn-build-service-prod]

Learn Build status updates of commit 33715e3:

✅ Validation status: passed

File	Status	Preview URL	Details
WindowsServerDocs/security/authority-information-access-retrieval.md	✅Succeeded

For more details, please refer to the build report.

[dodexahedron (dodexahedron)]

Broken version was

$registryPath = "HKLM:\Software\Policies\Microsoft\SystemCertificates\ChainEngine\Config"
$propertyName = "Options"
 
try {
    $regCheck = (Get-ItemProperty -Path $registryPath -Name $propertyName -ErrorAction Stop).$propertyName
 
    switch ($value) {
        0 { "AIA is Enabled" }
        2 { "AIA is Disabled" }
        default { "Unexpected value: $regCheck" }
    }
} catch {
    "AIA has not been set"
}

Fixed version only changes the condition of the switch:

$registryPath = "HKLM:\Software\Policies\Microsoft\SystemCertificates\ChainEngine\Config"
$propertyName = "Options"
 
try {
    $regCheck = (Get-ItemProperty -Path $registryPath -Name $propertyName -ErrorAction Stop).$propertyName
 
    switch ($regCheck) {
        0 { "AIA is Enabled" }
        2 { "AIA is Disabled" }
        default { "Unexpected value: $regCheck" }
    }
} catch {
    "AIA has not been set"
}

[dodexahedron (dodexahedron)]

CLA previously signed. Ready to go at your leisure.

[dodexahedron (dodexahedron)]

Actually, looks like someone submitted this fix 4 months ago, already, in #8132.

Feel free to close this as a duplicate, but I'm leaving it up here for visibility since there seems to have been no motion on #8132.