YES I stole that code named : TZPReworkedHealing
BUT It's not that all.
NOW Healing Amount is Customizable!
Then, You will be able to find this file in Edit Config.
And press this "Edit Config" Button!
So you can find this Setting, Right?
You can set the value of this Setting as much as you want Heal. (If it goes to a negative value, you will take damage when using it)
That's IT! And enjoy this mod.