Fix spelling

boards/beaglev/ahead/04-expansion.rst

@@ -482,7 +482,7 @@ The **GPIO** row is the expected gpio identifier number in the Linux
 kernel.
 
 Each row includes the gpiochipX and pinY in the format of 
-`X Y`. You can use these values to direcly control the GPIO pins with the 
+`X Y`. You can use these values to directly control the GPIO pins with the 
 commands shown below.
 
 .. code:: bash