Update microsoft-365-developer-program-faq.yml

[lindalu-MSFT]

Add May 31 to June 5 expiry info

[learn-build-service-prod[bot]]

Learn Build status updates of commit 6624391:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
docs/microsoft-365-developer-program-faq.yml	:white_check_mark:Succeeded	View

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