Update MathUtils.d.ts

examples/jsm/utils/MathUtils.d.ts

@@ -1,4 +1,4 @@
-import {Quaternion} from "../../..";
+import {Quaternion} from "../../../src/Three";
 
 export namespace MathUtils {
 	export function setQuaternionFromProperEuler(q: Quaternion, a: number, b: number, c: number, order: string): void ;