DATACMNS-973 - Polishing.

Convert @see http://… links to valid format using @see <a href=…>…</a>.

src/main/java/org/springframework/data/convert/ThreeTenBackPortConverters.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 the original author or authors.
+ * Copyright 2015-2017 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.
@@ -40,7 +40,7 @@ import org.threeten.bp.ZoneId;
  * the classpath.
  * 
  * @author Oliver Gierke
- * @see http://www.threeten.org/threetenbp
+ * @see <a href="http://www.threeten.org/threetenbp">http://www.threeten.org/threetenbp</a>
  * @since 1.10
  */
 public abstract class ThreeTenBackPortConverters {