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 8233d77d2f7cf4034c94049756d98615774f3f14

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

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