arc: shorten headline

Signed-off-by: AuxXxilium <info@auxxxilium.tech>

files/initrd/opt/arc/arc.sh

@@ -74,13 +74,13 @@ function backtitle() {
     ARC_TITLE="${ARC_TITLE} -> Update: ${NEWTAG}"
   fi
   if [ ! -n "${MODEL}" ]; then
-    MODEL="(no Model)"
+    MODEL="(Model)"
   fi
   if [ ! -n "${PRODUCTVER}" ]; then
-    PRODUCTVER="(no Version)"
+    PRODUCTVER="(Version)"
   fi
   if [ ! -n "${IPCON}" ]; then
-    IPCON="(no IP)"
+    IPCON="(IP)"
   fi
   BACKTITLE="${ARC_TITLE} | "
   BACKTITLE+="${MODEL} | "