Fix flow issue

Author: larsjohnsen

lib/modules/showImages.js

@@ -2019,6 +2019,7 @@ class Video extends Media {
 			// $FlowIssue `Document#fullscreen` `Video#requestFullscreen` and `Document#exitFullscreen` not typed
 			this.video.requestFullscreen();
 			await enterFullscreenPromise;
+			// $FlowIssue `Document#fullscreen` `Video#requestFullscreen` and `Document#exitFullscreen` not typed
 			if (document.fullscreen) await waitForEvent(this.video, 'fullscreenchange', 'dblclick'); // leaves fullscreen
 			// $FlowIssue `Document#fullscreen` `Video#requestFullscreen` and `Document#exitFullscreen` not typed
 			if (document.fullscreen) document.exitFullscreen();