Mythic Dungeons comes with a default config that includes lots of comments to explain all the different config options. But just in case you need to reference the original config, or if there's been updates with new config options, you can always retrieve the config from here!
Mythic Dungeons config.yml
General:
# The max number of instances that can be run on this server.
MaxInstances: 10
# The interval between autosaves of the dungeon while in edit mode in seconds. 0 disables autosave. (NOT RECOMMENDED)
AutoSaveInterval: 300
# What the function builder item's material is. Must be a valid Spigot material.
# Useful if you have another plugin that also uses FEATHER for a tool, like goPaint
FunctionBuilderItem: FEATHER
# Whether or not the `/md stuck` command kills the player.
StuckKillsPlayer: false
# How long the ready check (from when a dungeon becomes available) will wait for all players to be ready.
ReadyCheckTime: 45
PartyFinder:
# Whether to automatically broadcast the listening regularly.
AutoBroadcast: true
# How many minutes there should be between each broadcast of a recruitment listing.
ListingBroadcastPeriod: 5