Fix window scroll container

Signed-off-by: Julius Härtl <jus@bitgrid.net>

apps/files/js/filelist.js

@@ -3523,9 +3523,9 @@
 			var _this = this;
 			var $scrollContainer = this.$container;
 			if ($scrollContainer[0] === window) {
-				// need to use "body" to animate scrolling
+				// need to use "html" to animate scrolling
 				// when the scroll container is the window
-				$scrollContainer = $('body');
+				$scrollContainer = $('html');
 			}
 			$scrollContainer.animate({
 				// Scrolling to the top of the new element