Refactor subtitleOffset function to update range values and append items

packages/artplayer/src/setting/subtitleOffset.js

@@ -7,7 +7,7 @@ export default function subtitleOffset(art) {
         html: i18n.get('Subtitle Offset'),
         icon: icons.subtitle,
         tooltip: '0s',
-        range: [0, -5, 5, 0.1],
+        range: [0, -10, 10, 0.1],
         onChange(item) {
             art.subtitleOffset = item.range[0];
             return item.range[0] + 's';