新增buff 玉米精灵蓄力时间减少 玉米精灵强化子弹蓄力，瞄准 修复了购买按钮文字显示出错问题

chenxin

2020-11-24 3ff709247a18476b484a5a0446ee47f1b68de05c

 Assets/Scripts/TowerDefense/Level/EndlessBuff/EndlessBuffManager.cs

@@ -36,6 +36,7 @@
                new SlowDown(),
                new FireRateAdd(),
                new SkillLevelUp(),
                new DecreaseWoodChargeTime(),
            };
        }