[MC-88569] Armor slots inconsistency

The bug

Armor slots have different names for /replaceitem and the Slot tag for AttributeModifiers:

`replaceitem`	`AttributeModifiers` `Slot`
slot.armor.feet	feet
slot.armor.legs	legs
slot.armor.chest	torso
slot.armor.head	head
slot.weapon.mainhand	mainhand
slot.weapon.offhand	offhand

You do not have to make it more complicated than it is already...

Note: The translation for Slot:"torso" in the item description is also

When on body:

Which still only affects the chest slot

How to reproduce

Use the following commands

AttributeModifiers

/give @p dirt 1 0 {AttributeModifiers:[{Amount:0d,AttributeName:"generic.attackSpeed",Name:"Slot Name Test",Operation:0,UUIDLeast:1,UUIDMost:1,Slot:"torso"}]}

replaceitem

/replaceitem entity @p slot.armor.chest diamond_chestplate