Build Without Install (BWOI) documentation is misleading

Steps to reproduce:

1. Veiw the BWOI docs page here https://docs.unity3d.com/Packages/com.unity.microsoft.gdk.tools@1.5/manual/build-without-install.html
2. Notice the GRDKEDITION env var is set and then later GXDKEDITION is used despite it never being set
3. Also notice SET "GameDK=C:\ExtractedGdk\Microsoft GDK" does not have a trailing backslash and should be SET "GameDK=C:\ExtractedGdk\Microsoft GDK\" especially for the next command as it ends up generating C:\ExtractedGdk\Microsoft GDK241000\ and not C:\ExtractedGdk\Microsoft GDK\241000\
4. Other changes may also be needed regarding layout changes for October 26 GDK

Reproducible with versions: 1.5.1

Tested on (OS): Windows 11

Notes:

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