Correct typo in documentation: position_control_example.md

Author: exMagic

docs/simplefoc_library/examples/position_control_example.md

@@ -70,7 +70,7 @@ And that is it, let's setup the motor.
 
 
 ## Motor code
-First we need to define the `BLDCMotor` class with the  number od pole pairs (`11`)
+First we need to define the `BLDCMotor` class with the  number of pole pairs (`11`)
 ```cpp
 // define BLDC motor
 BLDCMotor motor = BLDCMotor(11);