add an emptry line to the end of file

Author: Feiyang1

packages/database/src/index.standalone.ts

@@ -22,4 +22,4 @@ import { setWebSocketImpl } from './realtime/WebSocketConnection';
 setWebSocketImpl(Client);
 
 // This entry point should only be consumed by Admin SDK
-export * from './api.standalone';
+export * from './api.standalone';