Update New-TransportRule.md

[m-nestorovic]

Added correct statement regarding attachments types that are inspected when the attachment is password protected.

Work Item ID in the ADO: 3712290

[learn-build-service-prod]

Learn Build status updates of commit 856b69f:

✅ Validation status: passed

File	Status	Preview URL	Details
exchange/exchange-ps/exchange/New-TransportRule.md	✅Succeeded	View (exchange-ps)

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
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[learn-build-service-prod]

Learn Build status updates of commit c7897ae:

✅ Validation status: passed

File	Status	Preview URL	Details
exchange/exchange-ps/exchange/New-TransportRule.md	✅Succeeded	View (exchange-ps)

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[learn-build-service-prod]

Learn Build status updates of commit dbed5ff:

✅ Validation status: passed

File	Status	Preview URL	Details
exchange/exchange-ps/exchange/New-TransportRule.md	✅Succeeded	View (exchange-ps)

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel