Fix test cleanup to reset commons logging

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/logging/AutoConfigurationReportLoggingInitializerTests.java

@@ -105,7 +105,7 @@ public class AutoConfigurationReportLoggingInitializerTests {
 
 	@After
 	public void cleanup() {
-		System.clearProperty(LogFactory.FACTORY_PROPERTIES);
+		System.clearProperty(LogFactory.FACTORY_PROPERTY);
 		LogFactory.releaseAll();
 	}