Fix indent of autoindex param in server template

[jdmulloy]

This fixes the indenting of the autoindex parameter in the server template to be consistent with all the other parameters at the server level.

Before

server {
  listen *:80; 
 
  server_name           example.com;
 
  root /usr/local/www/example.com/; 
  return 301 https://$host$request_uri;
    autoindex off; 
  access_log            /var/log/nginx/example.com_redirect.access.log combined;
  error_log             /var/log/nginx/example.com_redirect.error.log;
}

After

server {
  listen *:80; 
 
  server_name           example.com;
 
  root /usr/local/www/example.com/; 
  return 301 https://$host$request_uri;
  autoindex off; 
  access_log            /var/log/nginx/example.com_redirect.access.log combined;
  error_log             /var/log/nginx/example.com_redirect.error.log;
}