Update sys/fmt/fmt.c

Co-authored-by: crasbe <[email protected]>

Author: maribu

sys/fmt/fmt.c

@@ -377,7 +377,7 @@ static const uint32_t _tenmap[] = {
     10000000LU,
 };
 
-#define TENMAP_SIZE  ARRAY_SIZE(_tenmap)
+#  define TENMAP_SIZE    ARRAY_SIZE(_tenmap)
 
 /* this is very probably not the most efficient implementation, as it at least
  * pulls in floating point math.  But it works, and it's always nice to have