Fix spelling mistake

Author: rnowling

content/hardware/11.accessories/modulino-nodes/modulino-buttons/tutorials/how-buttons-ardu/how-to-buttons-ardu.md

@@ -297,7 +297,7 @@ An example sketch, AddressChanger, is also included with the library inside the
 - Connect the module to your board, remove any other modules that might be in the chain. Connection must be via I²C.
 - Upload the sketch.
 - Open the Serial Monitor.
-- Text should now appear. Make sure the correct bauld-rate is selected if the displayed characters seem corrupted.
+- Text should now appear. Make sure the correct baud rate is selected if the displayed characters seem corrupted.
 
   ![Expected console output](assets/adressChanger.png)
 
@@ -346,4 +346,4 @@ Now that you've learned how to use your Modulino Buttons, you're all set to inte
 - Create a simple menu system where each button performs a different function.
 - Build a game controller for a simple arcade-style game.
 - Use the buttons to control other Modulino devices in your project.
-- Design an interactive installation where button presses trigger different visual and audio effects.
+- Design an interactive installation where button presses trigger different visual and audio effects.