Update manage-self-service-purchases-admins.md

[msbemba]

trafficstars

Updated the document with options to enable and disable self-service using Powershell commands

[msbemba]

Issue#https://github.com/MicrosoftDocs/microsoft-365-docs-pr/issues/23926

[msbemba]

@JohanFreelancer9 Please copy review

[yogkumgit]

@cmcatee-MSFT Please merge this PR. Thanks

[opbld32]

Learn Build status updates of commit d9f27b2:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
microsoft-365/commerce/subscriptions/manage-self-service-purchases-admins.md	:white_check_mark:Succeeded

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

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

[opbld32]

Learn Build status updates of commit 6e329d2:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
microsoft-365/commerce/subscriptions/manage-self-service-purchases-admins.md	:white_check_mark:Succeeded

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

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

[yogkumgit]

Author is working with PM to confirm the changes.

[yogkumgit]

@cmcatee-MSFT Please merge or update. Thanks