Merge pull request #21110 from izeye

* pr/21110:
  Polish

Closes gh-21110

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/KafkaMetricsAutoConfigurationTests.java

@@ -46,7 +46,7 @@ class KafkaMetricsAutoConfigurationTests {
 	}
 
 	@Test
-	void whenThereIsAnAProducerFactoryKafkaClientMetricsIsConfigured() {
+	void whenThereIsAProducerFactoryKafkaClientMetricsIsConfigured() {
 		this.contextRunner.withConfiguration(AutoConfigurations.of(KafkaAutoConfiguration.class))
 				.run((context) -> assertThat(context).hasSingleBean(KafkaClientMetrics.class));
 	}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/appoptics/AppOpticsPropertiesConfigAdapterTests.java

@@ -62,7 +62,7 @@ class AppOpticsPropertiesConfigAdapterTests
 	}
 
 	@Test
-	void whenPropertiesFloorTimesIsSetAdapterHostTagReturnsIt() {
+	void whenPropertiesFloorTimesIsSetAdapterFloorTimesReturnsIt() {
 		AppOpticsProperties properties = createProperties();
 		properties.setFloorTimes(true);
 		assertThat(createConfigAdapter(properties).floorTimes()).isTrue();

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/elastic/ElasticPropertiesConfigAdapterTests.java

@@ -49,7 +49,7 @@ class ElasticPropertiesConfigAdapterTests {
 	}
 
 	@Test
-	void whenPropertiesIndexDateSeparatorIsSetAdapterIndexDateFormatReturnsIt() {
+	void whenPropertiesIndexDateSeparatorIsSetAdapterIndexDateSeparatorReturnsIt() {
 		ElasticProperties properties = new ElasticProperties();
 		properties.setIndexDateSeparator("*");
 		assertThat(new ElasticPropertiesConfigAdapter(properties).indexDateSeparator()).isEqualTo("*");
@@ -84,7 +84,7 @@ class ElasticPropertiesConfigAdapterTests {
 	}
 
 	@Test
-	void whenPropertiesPipelineIsSetAdapterPasswordReturnsIt() {
+	void whenPropertiesPipelineIsSetAdapterPipelineReturnsIt() {
 		ElasticProperties properties = new ElasticProperties();
 		properties.setPipeline("testPipeline");
 		assertThat(new ElasticPropertiesConfigAdapter(properties).pipeline()).isEqualTo("testPipeline");

spring-boot-project/spring-boot-docs/src/docs/asciidoc/howto.adoc

@@ -2233,10 +2233,10 @@ If any of the keys to sanitize are URI format (i.e. `<scheme>://<username>:<pass
 === Map Health Indicators to Micrometer Metrics
 Spring Boot health indicators return a `Status` type to indicate the overall system health.
 If you want to monitor or alert on levels of health for a particular application, you can export these statuses as metrics via Micrometer.
-By default, the status codes "`up`", "`down`", "`out of service`" and "`unknown`" are used by Spring Boot.
+By default, the status codes "`UP`", "`DOWN`", "`OUT_OF_SERVICE`" and "`UNKNOWN`" are used by Spring Boot.
 To export these, you'll need to convert these states to some set of numbers so that they can be used with a Micrometer `Gauge`.
 
-The follow example shows one way to write such an exporter:
+The following example shows one way to write such an exporter:
 
 [source,java,indent=0,subs="verbatim,quotes,attributes"]
 ----

spring-boot-project/spring-boot-docs/src/test/java/org/springframework/boot/docs/actuate/metrics/MetricsHealthMicrometerExportExampleTests.java

@@ -41,7 +41,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  * @author Phillip Webb
  */
 @SpringBootTest
-public class MetricsHealthMicrometerExportExampleTests {
+class MetricsHealthMicrometerExportExampleTests {
 
 	@Autowired
 	private MeterRegistry registry;