Update directory-deleteditems-list.md

[saqeebhasan1]

This section of the doc specifies an incorrect request header. For advanced query capabilities the consistencylevel header should be eventual, not true

[learn-build-service-prod]

Learn Build status updates of commit a62f519:

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api-reference/v1.0/api/directory-deleteditems-list.md	✅Succeeded

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[learn-build-service-prod]

Learn Build status updates of commit 8c5e21e:

✅ Validation status: passed

File	Status	Preview URL	Details
api-reference/beta/api/directory-deleteditems-list.md	✅Succeeded
api-reference/v1.0/api/directory-deleteditems-list.md	✅Succeeded

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