Update absolute link to relative

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

Learn Build status updates of commit 33f8184:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
WSL/wsl-plugins.md	:white_check_mark:Succeeded	View

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[Saisang]

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[mattwojo]

Thanks @Saisang! Appreciate these fixes.