rename toughness formula to armor formula

Author: ryleu

Diff for: src/main/java/me/ryleu/armornerf/ArmorNerf.java

@@ -16,7 +16,7 @@ public class ArmorNerf implements ModInitializer {
 	private static ArmorFormula armorFormula = new VanillaFormula();
 	private static final HashMap<String, ArmorFormula> formulaRegistry = new HashMap<>();
 
-	public static ArmorFormula getToughnessFormula() {
+	public static ArmorFormula getArmorFormula() {
 		return armorFormula;
 	}
 

Diff for: src/main/java/me/ryleu/armornerf/mixin/DamageUtilMixin.java

@@ -28,7 +28,7 @@ public class DamageUtilMixin {
     private static void modifyGetDamageLeft(
             LivingEntity armorWearer, float damageAmount, DamageSource damageSource, float armor, float armorToughness, CallbackInfoReturnable<Float> cir
     ) {
-        ArmorFormula formula = ArmorNerf.getToughnessFormula();
+        ArmorFormula formula = ArmorNerf.getArmorFormula();
         cir.setReturnValue(Math.max(0F, formula.calculate(armorWearer, damageAmount, damageSource, armor, armorToughness)));
     }