rauc: Fix layer rename left-over

Point to changed meta-oniro-core layer for system.conf file.

Signed-off-by: Stefan Schmidt <stefan.schmidt@huawei.com>

meta-oniro-core/recipes-core/rauc/files/raspberrypi4/system.conf

@@ -14,7 +14,7 @@ bootloader=custom
 statusfile=/run/mount/sysdata/common/status.raucs
 
 # Description of A/B slots used on the Raspberry Pi 4.
-# Refer to meta-ohos-core/wic/x-raspberrypi.wks.in for details.
+# Refer to meta-oniro-core/wic/x-raspberrypi.wks.in for details.
 [slot.system.0]
 device=/dev/mmcblk0p2
 bootname=A