Fix structure

Author: marqdevx

content/hardware/05.nicla/boards/nicla-vision/tutorials/microphone_sensor/microphone_sensor.md

@@ -69,11 +69,11 @@ You can run the sketch to see the result, it will show the data that the microph
 
 Now that you can get the microphone data, let's control the built-in RGB LED and change the speed of its blinking depending on the values.
 
-**4. Complete code**
-
 You can access the example sketch at **Examples > PDM > PDMSerialPlotter** and then edit as we shown.
 Or the full edited sketch on our **Arduino_Pro_Tutorials** library.
 
+**Sketch**:
+
 ```arduino
   /*
     This example reads audio data from the on-board PDM microphones, and prints
@@ -176,7 +176,6 @@ Or the full edited sketch on our **Arduino_Pro_Tutorials** library.
 ```
 
 
-
 ## Testing It Out
 
 After you have successfully verified and uploaded the sketch to the board, open the Serial Monitor from the menu on the left. You will now see the new values printed.