Fix config copyright path in about window

static/about.html

@@ -34,6 +34,6 @@
       (<script>document.write(require('webtorrent/package.json').version)</script>)
       (<script>document.write(process.arch === 'x64' ? '64-bit' : '32-bit')</script>)
     </p>
-    <p><script>document.write(require('../config').APP_COPYRIGHT)</script></p>
+    <p><script>document.write(require('../src/config').APP_COPYRIGHT)</script></p>
   </body>
 </html>