Merge pull request phaserjs#4258 from OmarShehata/jsdoc-syntax

Fix jsdoc syntax

Author: photonstorm

src/gameobjects/GameObject.js

@@ -66,7 +66,7 @@ var GameObject = new Class({
          * If you need to store complex data about your Game Object, look at using the Data Component instead.
          *
          * @name Phaser.GameObjects.GameObject#state
-         * @type {{integer|string}}
+         * @type {(integer|string)}
          * @since 3.16.0
          */
         this.state = 0;

src/structs/List.js

@@ -711,7 +711,7 @@ var List = new Class({
      *
      * @name Phaser.Structs.List#first
      * @genericUse {T} - [$type]
-     * @type {*} The first item in the List or `null` for an empty List.
+     * @type {*}
      * @readonly
      * @since 3.0.0
      */
@@ -738,7 +738,7 @@ var List = new Class({
      *
      * @name Phaser.Structs.List#last
      * @genericUse {T} - [$type]
-     * @type {*} The last item in the List, or `null` for an empty List.
+     * @type {*}
      * @readonly
      * @since 3.0.0
      */
@@ -767,7 +767,7 @@ var List = new Class({
      *
      * @name Phaser.Structs.List#next
      * @genericUse {T} - [$type]
-     * @type {*} The next item in the List, or `null` if the entire List has been traversed.
+     * @type {*}
      * @readonly
      * @since 3.0.0
      */
@@ -796,7 +796,7 @@ var List = new Class({
      *
      * @name Phaser.Structs.List#previous
      * @genericUse {T} - [$type]
-     * @type {*} The previous item in the List, or `null` if the entire List has been traversed.
+     * @type {*}
      * @readonly
      * @since 3.0.0
      */