mailmap: switch email address for John Moon

Add current email address as QUIC email is no longer active.

Link: https://lkml.kernel.org/r/20240131034311.46706-1-john@jmoon.dev


Signed-off-by: John Moon <john@jmoon.dev>
Acked-by: Trilok Soni <quic_tsoni@quicinc.com>
Cc: Elliot Berman <quic_eberman@quicinc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>