Add manual installation guidance for new Linux distributions

[spalak287]

Summary

Update the manual Microsoft Defender for Endpoint on Linux installation guidance for recently enabled distributions:

• Add repository entries for Alma 10, RHEL/Oracle 10, Fedora 43, and Rocky 10.
• Add the Microsoft 2025 signing-key instructions required by the new RPM and SLES 16 repositories.
• Add the DNF 5 repository command required on Fedora 43.
• Add SLES 16 repository instructions.

[prmerger-automator]

spalak287 : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change. Paul Inbar (@paulinbar)

[prmerger-automator]

spalak287 : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change. Paul Inbar (@paulinbar)

[learn-build-service-prod]

Learn Build status updates of commit da3690e:

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[learn-build-service-prod]

Learn Build status updates of commit c64ff87:

✅ Validation status: passed

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defender-endpoint/linux-install-manually.md	✅Succeeded

For more details, please refer to the build report.

[learn-build-service-prod]

Learn Build status updates of commit 615932e:

✅ Validation status: passed

File	Status	Preview URL	Details
defender-endpoint/linux-install-manually.md	✅Succeeded

For more details, please refer to the build report.

[Regan Downer (v-regandowner)]

Gopalakrishnan Krishnan (@Gopal-MSFT)

Can you review the proposed changes?

IMPORTANT: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged"
@MicrosoftDocs/public-repo-pr-review-team