[2021-04-27 01:43] Fix bug: Syntax mistake with a comma

Signed-off-by: zry <admin@z-touhou.org>

src/gpio.rs

@@ -1235,7 +1235,7 @@ impl_pxx! {
     (gpiod::PDx),
     (gpioe::PEx),
     (gpiof::PFx),
-    (gpiog::PGx),
+    (gpiog::PGx)
 }
 
 gpio!(GPIOA, gpioa, gpioa, PAx, 0, [