Add new MariaDB image.

content/anvil/connecting_to_mysql.md

@@ -8,7 +8,7 @@ This guide assumes you associated your SSH Key Pair with the instance
 when it was created, and that you are connected to the [Anvil VPN]({{< relref "connecting_to_the_anvil_vpn" >}}).
 {{% /notice %}}
 
-The MySQL image HCC provides is a CentOS 7 image with MySQL (MariaDB) installed
+The MySQL images HCC provides are CentOS 7 based with MySQL/MariaDB installed
 and configured to allow remote access for a MySQL user named `root`.
 Access to MySQL is provided via this `root` user and a random password. When
 the instance is created, the password is set randomly using your