Fix outdated docs not consistent with code

Author: quaff

spring-boot-project/spring-boot-docs/src/docs/asciidoc/using/using-the-springbootapplication-annotation.adoc

@@ -5,7 +5,7 @@ A single `@SpringBootApplication` annotation can be used to enable those three f
 
 * `@EnableAutoConfiguration`: enable <<using#using.auto-configuration,Spring Boot's auto-configuration mechanism>>
 * `@ComponentScan`: enable `@Component` scan on the package where the application is located (see <<using#using.structuring-your-code,the best practices>>)
-* `@Configuration`: allow to register extra beans in the context or import additional configuration classes
+* `@SpringBootConfiguration`: an alternative to Spring's standard `@Configuration`, allow to register extra beans in the context or import additional configuration classes
 
 [source,java,indent=0,subs="verbatim"]
 ----
@@ -24,5 +24,5 @@ For instance, you may not want to use component scan or configuration properties
 include::{docs-java}/using/usingthespringbootapplicationannotation/individualannotations/MyApplication.java[]
 ----
 
-In this example, `Application` is just like any other Spring Boot application except that `@Component`-annotated classes and `@ConfigurationProperties`-annotated classes are not detected automatically and the user-defined beans are imported explicitly (see `@Import`).
+In this example, `MyApplication` is just like any other Spring Boot application except that `@Component`-annotated classes and `@ConfigurationProperties`-annotated classes are not detected automatically and the user-defined beans are imported explicitly (see `@Import`).
 ====

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/using/usingthespringbootapplicationannotation/individualannotations/MyApplication.java

@@ -17,11 +17,11 @@
 package org.springframework.boot.docs.using.usingthespringbootapplicationannotation.individualannotations;
 
 import org.springframework.boot.SpringApplication;
+import org.springframework.boot.SpringBootConfiguration;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
-import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
 
-@Configuration(proxyBeanMethods = false)
+@SpringBootConfiguration(proxyBeanMethods = false)
 @EnableAutoConfiguration
 @Import({ SomeConfiguration.class, AnotherConfiguration.class })
 public class MyApplication {

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/using/usingthespringbootapplicationannotation/springapplication/MyApplication.java

@@ -19,7 +19,7 @@
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
-@SpringBootApplication // same as @Configuration @EnableAutoConfiguration @ComponentScan
+@SpringBootApplication // same as @SpringBootConfiguration @EnableAutoConfiguration @ComponentScan
 public class MyApplication {
 
 	public static void main(String[] args) {