Improve tips for using endToEndTestsForEntireSpringTestModule()

See gh-29122

spring-test/src/test/java/org/springframework/test/context/aot/AotIntegrationTests.java

@@ -107,12 +107,16 @@ void endToEndTests() {
 	@Test
 	void endToEndTestsForEntireSpringTestModule() {
 		// AOT BUILD-TIME: CLASSPATH SCANNING
-		List<Class<?>> testClasses = createTestClassScanner()
+		List<Class<?>> testClasses =
+				// FYI: you can limit execution to a particular set of test classes as follows.
+				// List.of(DirtiesContextTransactionalTestNGSpringContextTests.class, ...);
+				createTestClassScanner()
 				.scan()
-				// FYI: you can limit execution to a particular package as follows.
+				// FYI: you can limit execution to a particular package and its subpackages as follows.
 				// .scan("org.springframework.test.context.junit.jupiter")
 				.toList();
 
+
 		// AOT BUILD-TIME: PROCESSING
 		InMemoryGeneratedFiles generatedFiles = new InMemoryGeneratedFiles();
 		TestContextAotGenerator generator = new TestContextAotGenerator(generatedFiles);