improve: Add an empty line after campus selection

This follows an observation that users try to use the arrow keys to move up if the prompt is immediately below the campus selection list.

install.sh

@@ -174,6 +174,7 @@ if { [[ -z "$home_max_size" ]] || [[ $home_max_size -eq 0 ]]; } &&
     while true; do
         pretty_print "${bold}Choose your campus:${reset}"
         printf "%b\n" "${prompt_campuses[@]}"
+        printf "\n"
         read -rp "> "
 
         # Check if input is a valid number of the list