Fill gaps from assistant conversations: ZIP and Confluence migration - #7254

Running Vale across on the following files affected by this PR:

- es/migration/manual.mdx
- fr/migration/manual.mdx
- migration/manual.mdx
- zh/migration/manual.mdx
- es/help-center/migrate-docs-from-a-zip-export.mdx
- es/help-center/migrate-from-confluence.mdx
- fr/help-center/migrate-docs-from-a-zip-export.mdx
- fr/help-center/migrate-from-confluence.mdx
- help-center/migrate-docs-from-a-zip-export.mdx
- help-center/migrate-from-confluence.mdx
- zh/help-center/migrate-docs-from-a-zip-export.mdx
- zh/help-center/migrate-from-confluence.mdx

Attempting to initialize Vale linter...
Customer vale configuration detected. Attempting to sync packages...
Packages synced successfully.
Attempting to run Vale spellcheck...
Vale spellcheck completed successfully.

help-center/migrate-from-confluence.mdx:
	- 9:4       'Migrate Confluence content manually' should use sentence-style capitalization.
	- 20:234    In general, use active voice instead of passive voice ('is created').
	- 20:256    In general, use active voice instead of passive voice ('is added').

migration/manual.mdx:
	- 51:145    In general, use active voice instead of passive voice ('is excluded').
	- 90:63     In general, use active voice instead of passive voice ('be migrated').


Found 5 suggested changes across 2 files in 1538.90ms