fix bug

utils/bbr.sh

@@ -2,7 +2,7 @@
 
 # Install script for BBR base on CentOS 7 by xiaosong
 CentOS_Version=`cat /etc/redhat-release | grep -oE '[0-9]+\.[0-9]+' | cut -d'.' -f1`
-KVersion=4.12.9-1
+KVersion=4.13.0-1
 
 if [ -z ${CentOS_Version} ]
 then
@@ -78,6 +78,4 @@ echo " "
 echo "Installation is completed, now you can reboot the system. "
 echo "You should check BBR after the rebooting using command: "
 echo " "
-echo "     sysctl -a|grep congestion_control"
-
-
+echo "     sysctl -a|grep congestion_control"