Update README.adoc (#117)

README.adoc

@@ -348,7 +348,7 @@ Tests run: 3, Failures: 0, Errors: 0, Skipped: 0
 
 When you are done checking out the application, stop the Liberty instances by pressing `CTRL+C` in each command-line session where you ran the `system` and `inventory` microservices.
 
-== Using IBM MQ as the messaging server - Optional
+== Optional: Using IBM MQ as the messaging server
 
 The application has been built and tested. In this section, you'll learn how to configure Liberty to use https://github.com/ibm-messaging/mq-container[IBM MQ container^] as the messaging server instead of the embedded Liberty Messaging Server.