Update Audio.js

Docs: Fix typo.

src/audio/Audio.js

@@ -3,7 +3,7 @@ import { Object3D } from '../core/Object3D.js';
 /**
  * Represents a non-positional ( global ) audio object.
  *
- * This and related audio module make use of the [Web Audio API]{@link https://www.w3.org/TR/webaudio-1.1/}.
+ * This and related audio modules make use of the [Web Audio API]{@link https://www.w3.org/TR/webaudio-1.1/}.
  *
  * ```js
  * // create an AudioListener and add it to the camera