Add missing colons in defaults file

defaults/main.yml

 ---
 
-sshd_port 22
-sshd_permit_root_login no
-sshd_allow_pubkeys yes
-sshd_allow_passwords no
-sshd_print_motd no
-sshd_agent_forwarding no
-sshd_tcp_forwarding no
-sshd_x11_forwarding no
-sshd_listen_addresses
+sshd_port: 22
+sshd_permit_root_login: no
+sshd_allow_pubkeys: yes
+sshd_allow_passwords: no
+sshd_print_motd: no
+sshd_agent_forwarding: no
+sshd_tcp_forwarding: no
+sshd_x11_forwarding: no
+sshd_listen_addresses:
   - "0.0.0.0"
   - "::"