Update microsoft365-maturity-model--communication.md

[American-Dipper]

replace "Viva Topics"/"Microsoft Viva Topics" with "Topics" per ADO 8494600 (Daisy Feller)

Please use this template to ensure easier processing of your pull request

Category

• [X] Content fix
• [ ] New article

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

Learn Build status updates of commit 905d2b9:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
Community/microsoft365-maturity-model--communication.md	: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