Edited macros.md to only render only level for build_an_application

Had to regenerate this guide since the macro for build_an_application_subhead
was mended

README.md

@@ -246,7 +246,6 @@ The `@ComponentScan` annotation tells Spring to search recursively through the `
 The [`@EnableAutoConfiguration`][] annotation switches on reasonable default behaviors based on the content of your classpath. For example, because the application depends on the embeddable version of Tomcat (tomcat-embed-core.jar), a Tomcat server is set up and configured with reasonable defaults on your behalf. And because the application also depends on Spring MVC (spring-webmvc.jar), a Spring MVC [`DispatcherServlet`][] is configured and registered for you — no `web.xml` necessary! Auto-configuration is a powerful, flexible mechanism. See the [API documentation][`@EnableAutoConfiguration`] for further details.
 
 ### Build an executable JAR
------------------------
 
 Now that your `Application` class is ready, you simply instruct the build system to create a single, executable jar containing everything. This makes it easy to ship, version, and deploy the service as an application throughout the development lifecycle, across different environments, and so forth.