update danmuku.js

docs/mobile.html

@@ -122,11 +122,11 @@
                     danmuku: '/assets/sample/danmuku.xml',
                     speed: 5,
                     opacity: 1,
-                    fontSize: 20,
-                    maxlength: 50,
+                    fontSize: 14,
+                    maxlength: 100,
                     margin: ['10%', 60],
                     synchronousPlayback: false,
-                    filter: (danmu) => danmu.text.length < 20,
+                    filter: (danmu) => danmu.text.length < 50,
                 }),
             ],
             whitelist: ['*'],