chore: fix demo sharing

Author: wwayne

demo/index.html

@@ -33,7 +33,7 @@
     <link rel="icon" type="image/png" sizes="32x32" href="/static/favicon-32x32.png" />
     <link rel="icon" type="image/png" sizes="16x16" href="/static/favicon-16x16.png" />
     <link rel="manifest" href="/static/site.webmanifest" />
-    <link rel="mask-icon" href="/safari-pinned-tab.svg" color="#5bbad5" />
+    <link rel="mask-icon" href="/static/safari-pinned-tab.svg" color="#5bbad5" />
     <meta name="msapplication-TileColor" content="#da532c" />
     <meta name="theme-color" content="#ffffff" />
   </head>