Polish

See gh-20001

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

@@ -34,7 +34,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  *
  * @author Johannes Graf
  */
-class StackdriverMetricsExportAutoConfigurationTest {
+class StackdriverMetricsExportAutoConfigurationTests {
 
 	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(StackdriverMetricsExportAutoConfiguration.class));
@@ -45,7 +45,7 @@ class StackdriverMetricsExportAutoConfigurationTest {
 	}
 
 	@Test
-	void failsWithoutAnProjectId() {
+	void failsWithoutAProjectId() {
 		this.contextRunner.withUserConfiguration(BaseConfiguration.class)
 				.run((context) -> assertThat(context).hasFailed());
 	}

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

@@ -25,7 +25,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  *
  * @author Johannes Graf
  */
-class StackdriverPropertiesConfigAdapterTest {
+class StackdriverPropertiesConfigAdapterTests {
 
 	@Test
 	void whenPropertiesProjectIdIsSetAdapterProjectIdReturnsIt() {

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

@@ -28,7 +28,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  *
  * @author Johannes Graf
  */
-class StackdriverPropertiesTest extends StepRegistryPropertiesTests {
+class StackdriverPropertiesTests extends StepRegistryPropertiesTests {
 
 	@Test
 	void defaultValuesAreConsistent() {