Update README.md

Author: damalis

README.md

@@ -243,9 +243,13 @@ This will back up the all files and folders, once per day, and write it to ./bac
 #### example for crontab file
 
 ##### # old docker backup folder remove
+```
 50 23 * * * find ${DIRECTORY_PATH}/backups/backup* -type f -mtime +1 | xargs rm
+```
 
 ##### # backup exclude cakephp, backups folders in ${DIRECTORY_PATH}
+```
 00 01 * * * tar -czvf ${DIRECTORY_PATH}/backups/'backup-example.com-'$(date +"\%Y-\%m-\%dT\%H-\%M-\%S")'.tar.gz' --exclude='cakephp/app' --exclude='backups' ${DIRECTORY_PATH}
+```
 
 [CronHowto](https://help.ubuntu.com/community/CronHowto)