Update geo-to-geo-migrations.md

[HelioFerreira]

based in the ICM ncident-21000001109401 Details - IcM confirmed the unified environemtns re not supported -

[learn-build-service-prod]

Learn Build status updates of commit 578fe67:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
power-platform/admin/geo-to-geo-migrations.md	⚠️Warning		Details

power-platform/admin/geo-to-geo-migrations.md

• Line 1, Column 1: [Warning: author-missing - See documentation] Missing required attribute: 'author'. Add the current author's GitHub ID.
• Line 1, Column 1: [Warning: title-missing - See documentation] Missing required attribute: 'title'. Add a title string to show in search engine results.
• Line 1, Column 1: [Warning: ms-author-missing - See documentation] Missing required attribute: 'ms.author'. Add the current author's Microsoft alias.
• Line 1, Column 1: [Warning: ms-topic-missing - See documentation] Missing required attribute: 'ms.topic'.
• Line 17, Column 5: [Warning: yaml-header-syntax-error - See documentation] While parsing a block collection, did not find expected '-' indicator.
• Line 1, Column 1: [Suggestion: ms-date-missing - See documentation] Missing required attribute: 'ms.date'.
• Line 1, Column 1: [Suggestion: description-missing - See documentation] Missing required attribute: 'description'.

For more details, please refer to the build report.

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