Fix formating issue

An empty line is required before a block text formated as code.

Signed-off-by: Peter Senna Tschudin <peter.senna@collabora.com>

README.md

@@ -289,6 +289,7 @@ storage for configuration files and use them:
     changes made to /etc/cntlm.conf will be saved on the persistent storage.
     
 Depending on which files were altered on /etc, you will need to reboot:
+
     user@newSDK:~$ sudo reboot
 
 # Where are the old files and folders?