Change DataSourceHealthIndicator details from "hello" to "result"

Closes gh-15136

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/jdbc/DataSourceHealthIndicator.java

@@ -114,7 +114,7 @@ public class DataSourceHealthIndicator extends AbstractHealthIndicator
 			List<Object> results = this.jdbcTemplate.query(validationQuery,
 					new SingleColumnRowMapper());
 			Object result = DataAccessUtils.requiredSingleResult(results);
-			builder.withDetail("hello", result);
+			builder.withDetail("result", result);
 		}
 	}
 

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/jdbc/DataSourceHealthIndicatorTests.java

@@ -67,7 +67,7 @@ public class DataSourceHealthIndicatorTests {
 		this.indicator.setDataSource(this.dataSource);
 		Health health = this.indicator.health();
 		assertThat(health.getDetails().get("database")).isNotNull();
-		assertThat(health.getDetails().get("hello")).isNotNull();
+		assertThat(health.getDetails().get("result")).isNotNull();
 	}
 
 	@Test
@@ -80,7 +80,7 @@ public class DataSourceHealthIndicatorTests {
 		System.err.println(health);
 		assertThat(health.getDetails().get("database")).isNotNull();
 		assertThat(health.getStatus()).isEqualTo(Status.UP);
-		assertThat(health.getDetails().get("hello")).isNotNull();
+		assertThat(health.getDetails().get("result")).isNotNull();
 	}
 
 	@Test