Restore PS 5.1 compatibility.

Due to a missing backtick, this module was no longer loading on downlevel
versions of PowerShell (specifically, Windows PowerShell 5.1).  The older
versions considered this a syntax error, despite PowerShell 7 loading and
parsing the .psm1 file correctly.

This commit fixes that by adding one missing backtick in the right place.

Thank you to my colleague, Aslan Grealis, for finding this flaw.

CHANGELOG.md

@@ -1,5 +1,8 @@
 # MailPolicyExplainer Change Log
 
+## Version 1.3.4 (Wednesday, January 24, 2024)
+**FIX** Some previous versions of this module failed to load on Windows PowerShell 5.1 due to a missing backtick.  PowerShell 7 considered this to be valid syntax.  Thanks to Aslan Grealis for finding this bug.
+
 ## Version 1.3.3 (Thursday, January 18, 2024)
 **FIX** When no DANE records are present for a domain with a single MX host, `Test-DaneRecords` would erroneously report the domain name when it should have reported the MX server name.
 

MailPolicyExplainer.psd1

@@ -7,7 +7,7 @@
 RootModule = 'src/MailPolicyExplainer.psm1'
 
 # Version number of this module.
-ModuleVersion = '1.3.3'
+ModuleVersion = '1.3.4'
 
 # Supported PSEditions
 CompatiblePSEditions = @('Core', 'Desktop')
@@ -112,9 +112,7 @@ PrivateData = @{
 		ProjectUri = 'https://github.com/rhymeswithmogul/MailPolicyExplainer'
 		IconUri = 'https://raw.githubusercontent.com/rhymeswithmogul/MailPolicyExplainer/main/icon/PSGallery.png'
 
-		ReleaseNotes = 'This is a bugfix release.  When no DANE records are present for a domain with a single MX host, `Test-DaneRecords` would erroneously report the domain name when it should have reported the MX server name.
-
-For example, if the only MX record was pointing to mail.contoso.com, the old error message would have said "DANE records are not present for contoso.com" instead of "DANE records are not present for mail.contoso.com".'
+		ReleaseNotes = 'Some previous versions of this module failed to load on Windows PowerShell 5.1 due to a missing backtick.  PowerShell 7 considered this to be valid syntax.'
 	}
 }
 

NEWS.md

@@ -1,5 +1,10 @@
 # MailPolicyExplainer News
 
+## Version 1.3.4
+This was released on Wednesday, January 24, 2024.
+
+This is a bugfix release.  Due to a tiny syntax error, this module was not loading on Windows PowerShell 5.1.  This has been corrected.  PowerShell 7 was not affected.  Thank you to Aslan Grealis for pointing this out.
+
 ## Version 1.3.3
 This was released on Thursday, January 17, 2024.
 

src/MailPolicyExplainer.psm1

@@ -362,7 +362,7 @@ Function Test-DaneRecord
 	# Fetch all MX records for this domain.  We won't do a DNSSEC check here,
 	# since we did that if the user entered here via Test-MailFlow.
 	$MXServers = @()
-	Invoke-GooglePublicDnsApi $DomainName 'MX' -Debug:$DebugPreference
+	Invoke-GooglePublicDnsApi $DomainName 'MX' -Debug:$DebugPreference `
 		| Select-Object -ExpandProperty Answer `
 		| Where-Object type -eq 15 `
 		| Select-Object -ExpandProperty Data `