Issue #83: Final tweaks to examples in Chapter 12.

https-letsencrypt/inventory.example

@@ -1,2 +1,6 @@
 [letsencrypt]
-subdomain.example.com ansible_ssh_user=myuser [email protected]
+subdomain.example.com
+
+[letsencrypt:vars]
+ansible_ssh_user=myuser
+[email protected]

https-letsencrypt/templates/https-letsencrypt.conf.j2

@@ -8,7 +8,7 @@ server {
     return 301 https://$host$request_uri;
 }
 
-# Serve HTTPS traffic using the self-signed certificate created by Ansible.
+# Serve HTTPS traffic using the Let's Encrypt certificate.
 server {
     listen 443 ssl default_server;
     server_name {{ inventory_hostname }};