fix(hero): 修正治疗特效的资源路径与动画参数

1. 将治疗特效的资源路径从heathed改为end/heal
2. 调整治疗动画的采样率和时长以优化表现
3. 新增攻击力提升、冷却缩减的技能结束特效预制体

assets/script/game/hero/HeroViewComp.ts

@@ -271,7 +271,7 @@ export class HeroViewComp extends CCComp {
     }
     /** 治疗特效 */
     private heathed() {
-        this.spawnAnimEndFx("game/skill/buff/heathed", this.node, undefined);
+        this.spawnAnimEndFx("game/skill/end/heal", this.node, undefined);
     }
     private deaded() {
         this.spawnAnimEndFx("game/skill/end/dead", this.node.parent, this.node.position);