Merge pull request #20569 from beidongjiedeguang/dev1

Fix parameter error of AnimationClip.toJSON()

src/animation/AnimationClip.d.ts

@@ -45,6 +45,6 @@ export class AnimationClip {
 		animation: any,
 		bones: Bone[]
 	): AnimationClip;
-	static toJSON(): any;
+	static toJSON( clip: AnimationClip ): any;
 
 }