Fixed wrong Japanese localization.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@18844 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/resources/hudson/Messages_ja.properties

@@ -29,7 +29,7 @@ Util.second={0} \u79D2
 Util.minute={0} \u5206
 Util.hour  ={0} \u6642\u9593
 Util.day   ={0} \u65E5
-Util.month ={0} \u6708
+Util.month ={0} \u30F6\u6708
 Util.year  ={0} \u5E74
 Util.countSuffix=
 Util.pastTime={0}\u524D