fix(studio): StudioModifyTarget 示例与 studio.yaml 契约镜像对齐(去 gamedef)

Step6 改了 contracts/api-schemas/studio.yaml 的 path 字段示例(去失效的
/gameDefinition/scenes/2),其 Java VO 镜像 StudioModifyTarget L25 @Schema
示例漏同步。补齐:/gameDefinition/scenes/2 → /files/src/game.js,保契约
yaml↔VO 一致(端点/字段结构不动,仅示例措辞)。

验证:mvn -pl studio-server -am compile = BUILD SUCCESS。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

game-cloud/game-module-studio/game-module-studio-server/src/main/java/com/wanxiang/huijing/game/module/studio/controller/app/studio/vo/StudioModifyTarget.java

@@ -22,7 +22,7 @@ public class StudioModifyTarget {
     @NotBlank(message = "寻址目标 kind 不能为空")
     private String kind;
 
-    @Schema(description = "源项目内 JSON 指针（如 /config/speed、/assets/0、/gameDefinition/scenes/2；与 id 至少其一）", example = "/config/speed")
+    @Schema(description = "源项目内 JSON 指针（如 /config/speed、/assets/0、/files/src/game.js；与 id 至少其一）", example = "/config/speed")
     private String path;
 
     @Schema(description = "或按部件 id 寻址（behaviors[].id / assets[].id；与 path 至少其一）")