Update New-TransportRule.md

Fixed statement how AttachmentHasExecutableContent/ExceptIfAttachmentHasExecutableContent is working.

Work Item ID in the ADO: 3543132

Author: m-nestorovic

exchange/exchange-ps/exchange/New-TransportRule.md

@@ -885,7 +885,9 @@ This parameter specifies a condition or part of a condition for the rule. The na
 
 In on-premises Exchange, this condition is only available on Mailbox servers.
 
-The AttachmentHasExecutableContent parameter specifies a condition that looks for executable content in message attachments. Valid values are:
+This condition inspects messages where an attachment is an executable file. The system inspects the file's properties rather than relying on the file's extension. To understand better this condition/exception, see [Use mail flow rules to inspect message attachments in Exchange Online](/exchange/security-and-compliance/mail-flow-rules/inspect-message-attachments).
+
+Valid values are:
 
 - $true: Look for executable content in message attachments.
 - $false: Don't look for executable content in message attachments.
@@ -1743,7 +1745,9 @@ This parameter specifies an exception or part of an exception for the rule. The
 
 In on-premises Exchange, this exception is only available on Mailbox servers.
 
-The ExceptIfAttachmentHasExecutableContent parameter specifies an exception that looks for executable content in message attachments. Valid values are:
+This exception inspects messages where an attachment is an executable file. The system inspects the file's properties rather than relying on the file's extension. To understand better this condition/exception, see [Use mail flow rules to inspect message attachments in Exchange Online](/exchange/security-and-compliance/mail-flow-rules/inspect-message-attachments). 
+
+Valid values are:
 
 - $true: Look for executable content in message attachments.
 - $false: Don't look for executable content in message attachments.