Merge pull request #21906 from lltx

* pr/21906:
  Update copyright year of changed files
  Fix wrong property reference to keys-to-sanitize in Javadoc

Closes gh-21906

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/context/properties/ConfigurationPropertiesReportEndpoint.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -71,8 +71,9 @@
  * <p>
  * To protect sensitive information from being exposed, certain property values are masked
  * if their names end with a set of configurable values (default "password" and "secret").
- * Configure property names by using {@code endpoints.configprops.keys_to_sanitize} in
- * your Spring Boot application configuration.
+ * Configure property names by using
+ * {@code management.endpoint.configprops.keys-to-sanitize} in your Spring Boot
+ * application configuration.
  *
  * @author Christian Dupuis
  * @author Dave Syer