Fix grammar and such

[avipie]

Fix grammar and such :)

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

Learn Build status updates of commit 03f5bb8:

:white_check_mark: Validation status: passed

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powerbi-docs/guidance/whitepaper-azure-b2b-power-bi.md	:white_check_mark:Succeeded

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

Learn Build status updates of commit c61cbb8:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
powerbi-docs/guidance/whitepaper-azure-b2b-power-bi.md	:white_check_mark: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

[Court72]

@davidiseminger

Can you review the proposed changes?

When the changes are ready for publication, add a #sign-off comment to signal that the PR is ready for the review team to merge.

@MicrosoftDocs/public-repo-pr-review-team

[davidiseminger]

Thanks for the close read!

sign-off