Subdivide Win10 versions to their major update versions

[CC007]

Windows 10 is here to stay and will only have its bi-yearly updates to introduce new features.

To show more precisely which windows version is being used, it would be nice to see which update version the server uses (like 1803, 1809, 1903, 1909 or 2004)

[astei]

You can't do this without either the JVM exposing the Windows build or writing native code to get the build. I don't see either happening (the former, maybe, the latter definitely not). bStats is just reporting what the Java system properties say, as you can see from this screenshot:

Also, Minecraft servers overwhelmingly run on Linux, not Windows.

[CC007]

Hmm yes this is indeed a JVM issue, not a problem with bStats.