Fix typo: Seemless -> Seamless

[changeworld]

[prmerger-automator[bot]]

@changeworld : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.

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

Learn Build status updates of commit 063b715:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
articles/operator-service-manager/release-notes.md	:white_check_mark:Succeeded

For more details, please refer to the build report.

[v-ccolin]

I sent an email to the content owner today.

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

[v-dirichards]

Fixing in: https://github.com/MicrosoftDocs/azure-docs-pr/pull/309017