add_vote "<name>" "<sv_command>"
so
add_vote "EzzE" "sv_map EzzE"
You can simply look in the ddnet-maps repo:
https://github.com/ddnet/ddnet-maps/blob/88abfe6cc48dd7697f03747a0e5c0530248d4f40/types/brutal/votes.cfg
They use change_map
on a side note.
For a list of supported settings i can just give you this again:
https://ddnet.org/settingscommands/
Most commands are explained. You can't find better explainations than this (edited)add_map_votes
That command is only if you want all maps in your map folder as vote