bsp: artpi2: repair tab.

Signed-off-by: stranding <[email protected]>

Author: StrandingNeko

.github/ALL_BSP_COMPILE.json

@@ -203,7 +203,7 @@
         "stm32/stm32h750-weact-ministm32h7xx",
         "stm32/stm32h750-fk750m1-vbt6",
         "stm32/stm32h7s7-st-disco",
-		"stm32/stm32h7r7-artpi2",
+        "stm32/stm32h7r7-artpi2",
         "stm32/stm32mp157a-st-discovery",
         "stm32/stm32mp157a-st-ev1",
         "stm32/stm32u575-st-nucleo",