Fix matchesNestedConfigurationClassWithoutTestMethodsIfItHasTestable()

See gh-18559

spring-boot-project/spring-boot-test/src/test/java/org/springframework/boot/test/context/filter/TestTypeExcludeFilterTests.java

@@ -81,7 +81,7 @@ class TestTypeExcludeFilterTests {
 
 	@Test
 	void matchesNestedConfigurationClassWithoutTestMethodsIfItHasTestable() throws Exception {
-		assertThat(this.filter.match(getMetadataReader(AbstractJupiterTestWithConfigAndExtendWith.Config.class),
+		assertThat(this.filter.match(getMetadataReader(AbstractJupiterTestWithConfigAndTestable.Config.class),
 				this.metadataReaderFactory)).isTrue();
 	}