Fix incorrect BitronixJtaConfiguration bean name

Fixes gh-2231

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jta/BitronixJtaConfiguration.java

@@ -95,7 +95,7 @@ class BitronixJtaConfiguration {
 
 	@Bean
 	@ConditionalOnMissingBean
-	public static BitronixDependentBeanFactoryPostProcessor atomikosDependsOnBeanFactoryPostProcessor() {
+	public static BitronixDependentBeanFactoryPostProcessor bitronixDependentBeanFactoryPostProcessor() {
 		return new BitronixDependentBeanFactoryPostProcessor();
 	}