In multiple applications and computer settings, Windows 11 identifies as Windows 10 to prevent application incompatibilities.
Windows uses the internal build number (as shown in Figure 4 [English only]) to differentiate between Windows 11 (Build 22000 and higher) and Windows 10 (Build below 22000).
To correctly identify the windows version on your computer, use Winver. For instructions, see Microsoft knowledge-base article: Which version of Windows operating system am I running.