bug#4362: 23.1: proced -- Mode help lists 'd' as mark command (prefer 'm')

[Jari Aalto]

M-x proced
C-h m


    Proced: user by -PU mode:
    Mode for displaying UNIX system processes and sending signals to them.
    Type M-x proced to start a Proced session.  In a Proced buffer
>>  type d to mark a process for later commands.
    Type x to send signals to marked processes.

SUGGESITON

PLease prefer listing the 'm' as the mark command in the mode help
listing. 'd' and 'm' both seem to mark lines, but for mode help, listing
the 'm' would better follow the convention used in other buffers like buffer
list, dired etc.