typo fixes

CREDITS

game/engine/dialogs/ShowQuests.lua

game/modules/example/class/Actor.lua

game/modules/example/dialogs/DeathDialog.lua

game/modules/example/dialogs/Quit.lua

game/modules/tome/class/Actor.lua

game/modules/tome/class/Object.lua

game/modules/tome/class/Player.lua

game/modules/tome/class/PlayerDisplay.lua

game/modules/tome/class/interface/Combat.lua

game/modules/tome/data/achievements/items.lua

game/modules/tome/data/achievements/talents.lua

game/modules/tome/data/birth/classes/mage.lua

game/modules/tome/data/birth/classes/rogue.lua

game/modules/tome/data/birth/classes/warrior.lua

game/modules/tome/data/birth/classes/wilder.lua

game/modules/tome/data/birth/descriptors.lua

game/modules/tome/data/birth/races/hobbit.lua

game/modules/tome/data/birth/races/human.lua

game/modules/tome/data/birth/races/undead.lua