stm32g4: irc.json: fix FDCAN1_INT0/1 swap

The swapped lines generated the wrong nvic.h, then jumping into the wrong ISR.
See data sheet RM0440rev7 (page442, table 97).

Reviewed-by: Karl Palsson <karlp@tweak.au>

include/libopencm3/stm32/g4/irq.json

@@ -21,8 +21,8 @@
         "adc12",
         "usb_hp",
         "usb_lp",
-        "fdcan1_intr1",
         "fdcan1_intr0",
+        "fdcan1_intr1",
         "exti9_5",
         "tim1_brk_tim15",
         "tim1_up_tim16",