WebUI: enforce coding style

Actually, not all of them but some that can be enforced by eslint.
The changes are made by eslint with minor manual tweaking.

PR #17046.

src/webui/www/private/scripts/prop-peers.js

@@ -36,7 +36,7 @@ window.qBittorrent.PropPeers = (function() {
     const exports = function() {
         return {
             updateData: updateData
-        }
+        };
     };
 
     const torrentPeersTable = new window.qBittorrent.DynamicTable.TorrentPeersTable();