Example 8-5, page 36.
If you never looked at the standard notation or the tab of that final G chord.....
G C# F# C
Gmaj11/13b5 ????
What's up with that?
i believe that's referred to as the Typo Chord.
If you change the C natural to its enharmonic equivalent a B# and the C# to its equivalent Db then you'd have the classic G-B#-Db-F# of the Gmaj7#3b5