Fix comment about armour damage calculation

[skbeh]

1.8.8 NMS

    protected float applyArmorModifier(DamageSource damagesource, float f) {
        if (!damagesource.ignoresArmor()) {
            int i = 25 - this.br();
            float f1 = f * (float) i;

            // this.damageArmor(f); // CraftBukkit - Moved into d(DamageSource, float)
            f = f1 / 25.0F;
        }

        return f;
    }