Update README.md

initial ubuntu setup/README.md

@@ -58,8 +58,11 @@ If you'd like to learn how to create an SSH key do so [here](https://github.com/
 ```
 sudo sed --in-place 's/^PermitRootLogin.*/PermitRootLogin prohibit-password/g' /etc/ssh/sshd_config
 sudo sed --in-place 's/#PasswordAuthentication yes/PasswordAuthentication no/' /etc/ssh/sshd_config
+systemctl restart sshd
 ```
-Using two sed commands above is the short way to disable root login. To disable it manually you can just do `sudo nano /etc/ssh/sshd_config` find a line called PermitRootLogin modify it. Then find a line called PasswordAuthentication and modify it as well.
+Using two sed commands above is the short way to disable root login. 
+To disable it manually you can just do `sudo nano /etc/ssh/sshd_config` find a line called PermitRootLogin modify it. 
+Then find a line called PasswordAuthentication and modify it as well. 
 
 If you need to be a root user, first login as **sammy**, your username. Then use the command below to be a root user.
 ```