Comment typo

Author: lurch

src/rp2_common/hardware_pio/pio.c

@@ -164,7 +164,7 @@ static int add_program_at_offset(PIO pio, const pio_program_t *program, uint off
         uint16_t instr = program->instructions[i];
 #if PICO_PIO_USE_GPIO_BASE
         if (pio_instr_bits_wait == _pio_major_instr_bits(instr) && !((_pio_arg1(instr) & 3u))) {
-            // wait GIO will include only the 5 lower bits of the GPIO number, so if the GPIO
+            // wait GPIO will include only the 5 lower bits of the GPIO number, so if the GPIO
             // base is 16 we need to flip bit 4 (which is equivalent to subtracting 16 from
             // the original number 16-47 stored as 16-31 and 0-15)
             static_assert(PIO_GPIOBASE_BITS == 16, ""); // only works for gpio base being 0 or 16