Update documentation to reference new Java package

[wtgodbe]

Todo - update this https://github.com/dotnet/aspnetcore-internal/blob/master/docs/release/ReleaseActivities.md#step-0-before-the-release, and this https://github.com/dotnet/aspnetcore-internal/blob/master/docs/release/ReleaseActivities.md#what-gets-published to reflect the new package introduced by #25253

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[wtgodbe]

Done as of https://github.com/dotnet/aspnetcore-internal/pull/3672