message: Fix RenderTexture type
diff: @@ -246,7 +246,7 @@ export default class AbstractRenderer extends EventEmitter
  * @param {number} resolution - The resolution / device pixel ratio of the texture being generated.
  * @param {PIXI.Rectangle} [region] - The region of the displayObject, that shall be rendered,
  * if no region is specified, defaults to the local bounds of the displayObject.
  - * @return {PIXI.Texture} A texture of the graphics object.
  + * @return {PIXI.RenderTexture} A texture of the graphics object.
  */
  generateTexture(displayObject, scaleMode, resolution, region)
  {
  