update docs

packages/artplayer/src/player/fullscreenWebMix.js

@@ -11,6 +11,8 @@ export default function fullscreenWebMix(art, player) {
             if (value) {
                 addClass($player, 'art-fullscreen-web');
                 player.aspectRatioReset = true;
+                player.autoHeight = false;
+                player.autoSize = false;
                 art.emit('resize');
                 art.emit('fullscreenWeb', true);
             } else {