add win11 network setup help

windows/windows11/setup_win11.markdown

+First setup Windows 11 @D-Phys
+==============================
+
+When you turn on your Windows 11 computer for the first time, the Setup Assistant, also known as the Out of the Box Experience (OOBE), will appear.
+
+If your computer only makes it to the 'Let’s connect you to a network' step and prompts for an internet connection, it means your device has not yet been registered. You can skip this menu item and register your computer later by following the steps below.
+
+[[!img /media/windows/windows11/windows_11_network.png]]
+
+* At “Let’s connect you to a network” screen, press SHIFT+F10 keys together. It’ll launch Command Prompt window on the top of setup wizard window.
+* enter following command in the command line:
+
+```batch
+taskkill /IM oobenetworkconnectionflow.exe /F
+```
+
+* Now close Command Prompt window and the Windows 11 setup wizard will show some progress with the circle animation.
+
+After installing of Windows 11 can you now [register](/network/how_to_get_network_access) your Computer.