(trivial doc fix) RFR: 8220262: fix headings in java.logging

[Daniel Fuchs]

Hi,

Please find below a trivial doc fix for:

8220262: fix headings in java.logging
https://bugs.openjdk.java.net/browse/JDK-8220262

The change is just:
- * <h3>LogManager Configuration</h3>
+ * <h2>LogManager Configuration</h2>

full patch below.

best regards,

-- daniel

=========================================================================
diff --git 
a/src/java.logging/share/classes/java/util/logging/LogManager.java 
b/src/java.logging/share/classes/java/util/logging/LogManager.java
--- a/src/java.logging/share/classes/java/util/logging/LogManager.java
+++ b/src/java.logging/share/classes/java/util/logging/LogManager.java
@@ -1,5 +1,5 @@
  /*
- * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights 
reserved.
+ * Copyright (c) 2000, 2019, 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
@@ -64,7 +64,7 @@
   * At startup the LogManager class is located using the
   * java.util.logging.manager system property.
   *
- * <h3>LogManager Configuration</h3>
+ * <h2>LogManager Configuration</h2>
   *
   * A LogManager initializes the logging configuration via
   * the {@link #readConfiguration()} method during LogManager 
initialization.
=========================================================================