fix shell warning on grep

shellscripts/api-imlciserver.sh

@@ -93,7 +93,7 @@ ${apiTS}
       ${IMLCI_URL}${apiRequest} | tee -a $outfile
   fi
 
-  grep "^HTTP\/" $outfile | head -1 | grep " 200 " >/dev/null
+  grep "^HTTP/" $outfile | head -1 | grep " 200 " >/dev/null
   local rccurl=$?
 
   rm -f $outfile