[root@centos ~]# vi /etc/httpd/conf.d/virtual-le-ssl.conf
↓下記を追加
<VirtualHost *:443>
    ServerName example.com:443
    ServerAlias www.example.com
    DocumentRoot /home/example/public_html
    ErrorLog /var/log/httpd/example.com-error_log
    CustomLog /var/log/httpd/example.com-access_log combined env=!nolog
    SSLCertificateFile /etc/letsencrypt/live/example.com/cert.pem
    SSLCertificateKeyFile /etc/letsencrypt/live/example.com/privkey.pem
    SSLCertificateChainFile /etc/letsencrypt/live/example.com/chain.pem
    <Directory "/home/example/public_html">
        Options Includes ExecCGI FollowSymLinks
    </Directory>
</VirtualHost>
 
[root@centos ~]# systemctl restart httpd