Update add-easing-to-your-game-animations-with-phaser.mdx

Author: jules-kris

projects/add-easing-to-your-game-animations-with-phaser/add-easing-to-your-game-animations-with-phaser.mdx

@@ -152,7 +152,7 @@ function create() {
 ```
 
 - `key: "walk"` is the name of the animation, used when we tell the sprite to play it.
-- `frames` and `this.anims.generateFrameNumbers` tells Phaser which frames of the `"player"` sprite sheet to use for this animation.
+- `frames` and `this.anims.generateFrameNumbers()` tells Phaser which frames of the `"player"` sprite sheet to use for this animation.
     - `start: 12, end: 17` uses frames 12 through 17.
 - `frameRate: 8` is how fast the animation plays, 8 frames per second.
 - `repeat: -1` loops the animation indefinitely.