8261306: ServiceLoader documentation has malformed Unicode escape

Reviewed-by: lancea, iris, naoto

src/java.base/share/classes/java/util/ServiceLoader.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2021, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -280,7 +280,7 @@
  * <p><a id="format">The provider-configuration file must be encoded in UTF-8. </a>
  * Space and tab characters surrounding each service provider's name, as well as
  * blank lines, are ignored. The comment character is {@code '#'}
- * ({@code '&#92;u0023'} <span style="font-size:smaller;">NUMBER SIGN</span>);
+ * ({@code U+0023} <span style="font-size:smaller;">NUMBER SIGN</span>);
  * on each line all characters following the first comment character are ignored.
  * If a service provider class name is listed more than once in a
  * provider-configuration file then the duplicate is ignored. If a service