api: mraa: gpio: Fix doxygen warning
This commit fixes the below doxygen warning:
"warning: unexpected token in comment block while parsing the argument of command param"
@@ -347,7 +347,7 @@ class Gpio
/**
* Change Gpio output driver mode
*
- * @param mode @param mode Set output driver mode
+ * @param mode Set output driver mode
* @return Result of operation
*/
Result
