Update Locale documentation after icu4c 51 upgrade.

Change-Id: Id924fd12cbf6e1c5494a9f6d3b0d2a2daf72ef90
diff --git a/luni/src/main/java/java/util/Locale.java b/luni/src/main/java/java/util/Locale.java
index 23db9dc..fcb821d 100644
--- a/luni/src/main/java/java/util/Locale.java
+++ b/luni/src/main/java/java/util/Locale.java
@@ -71,7 +71,8 @@
  * <tr><td>Gingerbread/Honeycomb</td><td>ICU 4.4</td> <td><a href="http://cldr.unicode.org/index/downloads/cldr-1-8">CLDR 1.8</a></td>   <td><a href="http://www.unicode.org/versions/Unicode5.2.0/">Unicode 5.2</a></td></tr>
  * <tr><td>Ice Cream Sandwich</td>   <td>ICU 4.6</td> <td><a href="http://cldr.unicode.org/index/downloads/cldr-1-9">CLDR 1.9</a></td>   <td><a href="http://www.unicode.org/versions/Unicode6.0.0/">Unicode 6.0</a></td></tr>
  * <tr><td>Jelly Bean</td>           <td>ICU 4.8</td> <td><a href="http://cldr.unicode.org/index/downloads/cldr-2-0">CLDR 2.0</a></td>   <td><a href="http://www.unicode.org/versions/Unicode6.0.0/">Unicode 6.0</a></td></tr>
- * <tr><td>Jelly Bean MR2</td>       <td>ICU 50</td>  <td><a href="http://cldr.unicode.org/index/downloads/cldr-21-1">CLDR 22.1</a></td> <td><a href="http://www.unicode.org/versions/Unicode6.2.0/">Unicode 6.2</a></td></tr>
+ * <tr><td>Jelly Bean MR2</td>       <td>ICU 50</td>  <td><a href="http://cldr.unicode.org/index/downloads/cldr-22-1">CLDR 22.1</a></td> <td><a href="http://www.unicode.org/versions/Unicode6.2.0/">Unicode 6.2</a></td></tr>
+ * <tr><td>Key Lime Pie</td>         <td>ICU 51</td>  <td><a href="http://cldr.unicode.org/index/downloads/cldr-23">CLDR 23</a></td>     <td><a href="http://www.unicode.org/versions/Unicode6.2.0/">Unicode 6.2</a></td></tr>
  * </table>
  *
  * <a name="default_locale"><h3>Be wary of the default locale</h3></a>