tweaked CHANGELOG.md

Author: gsmith-sas

CHANGELOG.md

@@ -12,9 +12,9 @@
   * [UPGRADE] OpenSearch Data Source Plugin to Grafana upgraded from 2.28.0 to 2.29.1
 * **Metrics**
   * [FEATURE] Automatically define the SMTP server configuration to permit Grafana to send e-mails.
-If enabled (by setting AUTOGENERATE_SMTP to 'true'), this optional feature allows admins to define
+If enabled (by setting `AUTOGENERATE_SMTP` to 'true'), this optional feature allows admins to define
 email-based contact points for alerts. Users need to provide connection information via the environment 
-variables: SMTP_SERVER, SMTP_PORT, SMTP_FROM_ADDRESS and SMTP_FROM_NAME.  See Autogenerate SMTP Configuration
+variables: `SMTP_SERVER, SMTP_PORT`, `SMTP_FROM_ADDRESS` and `SMTP_FROM_NAME`.  See Autogenerate SMTP Configuration
 for more information.