Content minor fix

Author: TaddyHC

content/hardware/05.pro-solutions/solutions-and-kits/opta/tutorials/tank-level-app-note/content.md

@@ -332,7 +332,7 @@ We will now continue with Big Tank's Opta™ to understand its main role.
 
 ### Example Code for Big Tank (BT)
 
-The Opta™ in charge of Big Tank has a very similar stucture to Small Tank's Opta™, as well as some of the functions in the code were generated by Arduino IoT Cloud during the dashboard configuration. Since it has a similar backbone code, we will focus on main tasks that only Big Tank is in charge of.
+The Opta™ in charge of Big Tank has a very similar structure to Small Tank's Opta™, as well as some of the functions in the code were generated by Arduino IoT Cloud during the dashboard configuration. Since it has a similar backbone code, we will focus on main tasks that only Big Tank is in charge of.
 
 The Big Tank's Opta™ has 2 main tasks. They are to stop the system operation or to control the attached pump. The `BT_System_Off()` is triggered if minimum level flag is turned off, in which will halt the Pump and send the valve off command for Small Tank's Opta™. This is the emergency stop for the system. The `BT_Pump_CTRL()` will send the valve off command whenever Big Tank's maximum level is reached and activate the pump to avoid reservoir overfill.