Polish "Test that source information is resolved from super class"

See gh-45382

spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/PropertyDescriptorResolverTests.java

@@ -84,7 +84,7 @@ class PropertyDescriptorResolverTests {
 					assertThat(itemMetadataList).map(ItemMetadata::getDefaultValue)
 						.containsExactly("three", "two", "one");
 					assertThat(itemMetadataList).map(ItemMetadata::getDescription)
-						.containsExactly("I'm third", "I'm second", "I'm first");
+						.containsExactly("Concrete property.", "Parent property.", "Grandparent property.");
 				});
 	}
 

spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationsample/simple/HierarchicalProperties.java

@@ -27,7 +27,7 @@ import org.springframework.boot.configurationsample.ConfigurationProperties;
 public class HierarchicalProperties extends HierarchicalPropertiesParent {
 
 	/**
-	 * I'm third
+	 * Concrete property.
 	 */
 	private String third = "three";
 

spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationsample/simple/HierarchicalPropertiesGrandparent.java

@@ -24,7 +24,7 @@ package org.springframework.boot.configurationsample.simple;
 public abstract class HierarchicalPropertiesGrandparent {
 
 	/**
-	 * I'm first
+	 * Grandparent property.
 	 */
 	private String first = "one";
 

spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationsample/simple/HierarchicalPropertiesParent.java

@@ -24,7 +24,7 @@ package org.springframework.boot.configurationsample.simple;
 public abstract class HierarchicalPropertiesParent extends HierarchicalPropertiesGrandparent {
 
 	/**
-	 * I'm second
+	 * Parent property.
 	 */
 	private String second = "two";