Link to Java quickstarts instead of Go

[ulrikandersen]

This PR fixes the quickstart links so they now point to the Java quickstarts instead of the Go ones.

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

Learn Build status updates of commit da83cb4:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
OpenAPI/kiota/quickstarts/java.md	:white_check_mark:Succeeded

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