Fixed typo in docs

[namansharma18899]

Resolves the documentation typo as descirbed in #1827

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

Learn Build status updates of commit 62f9a2a:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
WSL/wsl2-mount-disk.md	:white_check_mark:Succeeded	View

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[mattwojo]

Good catch. Thanks @namansharma18899!