Enable disarming already armed equipment

src/main/java/com/bartlomiejpluta/demo/world/weapon/Ammunition.java

@@ -39,6 +39,6 @@ public class Ammunition extends StackableItem implements Useable {
 
    @Override
    public String usageName() {
-      return "Equip";
+      return "Arm";
    }
 }

src/main/java/com/bartlomiejpluta/demo/world/weapon/MeleeWeapon.java

@@ -65,6 +65,6 @@ public class MeleeWeapon extends BaseItem implements Weapon {
 
    @Override
    public String usageName() {
-      return "Equip";
+      return "Arm";
    }
 }

src/main/java/com/bartlomiejpluta/demo/world/weapon/RangedWeapon.java

@@ -97,6 +97,6 @@ public class RangedWeapon extends BaseItem implements Weapon {
 
    @Override
    public String usageName() {
-      return "Equip";
+      return "Arm";
    }
 }