Add a note on configuring ssh

[zadjii-msft]

Closes #663

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

Learn Build status updates of commit 6082eff:

:warning: Validation status: warnings

File	Status	Preview URL	Details
TerminalDocs/tutorials/ssh.md	:warning:Warning	View	Details

TerminalDocs/tutorials/ssh.md

• Line 23, Column 50: [Warning: hard-coded-locale - See documentation] Link 'https://learn.microsoft.com/en-us/windows-server/administration/openssh/openssh_server_configuration' contains locale code 'en-us'. For localizability, remove 'en-us' from links to most Microsoft sites.
• Line 23, Column 50: [Suggestion: docs-link-absolute - See documentation] Absolute link 'https://learn.microsoft.com/en-us/windows-server/administration/openssh/openssh_server_configuration' will be broken in isolated environments. Replace with a relative link.

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

Learn Build status updates of commit d9877a6:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
TerminalDocs/tutorials/ssh.md	:white_check_mark:Succeeded	View

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