Fix jsdoc: change to #audioSprite

The Phaser.Loader.audioSprite method is using #audiosprite in its jsdoc. Here it is changed to #audioSprite.

Author: PhaserEditor2D

src/loader/Loader.js

@@ -1035,7 +1035,7 @@ Phaser.Loader.prototype = {
     *
     * The URL can be relative or absolute. If the URL is relative the `Loader.baseURL` and `Loader.path` values will be prepended to it.
     *
-    * @method Phaser.Loader#audiosprite
+    * @method Phaser.Loader#audioSprite
     * @param {string} key - Unique asset key of the audio file.
     * @param {Array|string} urls - An array containing the URLs of the audio files, i.e.: [ 'audiosprite.mp3', 'audiosprite.ogg', 'audiosprite.m4a' ] or a single string containing just one URL.
     * @param {string} [jsonURL=null] - The URL of the audiosprite configuration JSON object. If you wish to pass the data directly set this parameter to null.