Fix alert style

Author: a362758199

programming/javascript/user-guide/barcode-scanner.md

@@ -223,6 +223,7 @@ Now that the Barcode Scanner has been initialized and configured, it is ready to
 
 > [!TIP]
 > When running performance benchmarks, make sure to disable the console, avoid using `console.log()`, and run in non-debug mode whenever possible. This ensures that your benchmark results reflect true performance without interference from logging or debugging overhead.
+
 ## Next Steps
 
 Now that you've implemented the basic functionality, here are some recommended next steps to further explore the capabilities of the Barcode Scanner: