message: fix return type of Application._renderOuter
diff: @@ -323,7 +323,7 @@ declare abstract class Application<Options extends ApplicationOptions = Applicat
  * @returns A promise resolving to the constructed jQuery object
  * @internal
  */
  - protected _renderOuter(): Promise<HTMLElement> | Promise<JQuery<JQuery.Node>>;
  + protected _renderOuter(): Promise<JQuery>;
  /**
  * Render the inner application content
  