small per_gpio doc fix
@@ -71,7 +71,7 @@ uint8_t dsy_gpio_read(const dsy_gpio *p);
// ### write
// Writes the state to the gpio pin
//
-// Pin will be set to 3v3 when state is 1, and 0V when state is 0
+// Pin will be set to 3v3 when state is >0, and 0V when state is 0
// ~~~~
void dsy_gpio_write(const dsy_gpio *p, uint8_t state);
// ~~~~
