minor db sample doc update (#2471)

Co-authored-by: Ryan Eberhard <ryan.eberhard@oracle.com>

Author: Tom Barnes

documentation/staging/content/samples/database/_index.md

@@ -2,10 +2,16 @@
 title: "Run a database"
 date: 2019-02-23T16:43:10-05:00
 weight: 2
-description: "Run a database in Kubernetes."
+description: "Run an ephemeral database in Kubernetes that is suitable for sample or basic testing purposes."
 
 ---
 
+### Contents
+
+ - [Overview](#overview)
+ - [Oracle database in Kubernetes](#oracle-database-in-kubernetes)
+ - [MySQL database in Kubernetes](#mysql-database-in-kubernetes)
+
 ### Overview
 
 This section describes how to run an
@@ -93,8 +99,6 @@ The following example shows how to set up an ephemeral Oracle database with the
    $ start-db-service.sh
    ```
 
-   This step is based on the steps documented in [Run a Database]({{< relref "/samples/database/_index.md" >}}).
-
 ### MySQL database in Kubernetes
 
 The following example shows how to set up an ephemeral MySQL database with the following attributes: