fix: correct wrong ip address

The command "ip address show" returns an incorrect ip address.

10_network_and_ssh.Rmd

@@ -244,7 +244,7 @@ sudo useradd -m -s /bin/bash -g users student
 sudo passwd student
 ```
 
-Give the password and your IP to another member of your choice (`ip address show`).
+Give the password and your IP address to another member of your choice. The IP address is the one you used to connect to your VM.
 
 ## SSH client