move a new feature to correct section

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50872 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

NEWS

@@ -30,6 +30,9 @@ with all sufficient information, see the ChangeLog file.
     this flag means to permit deleting opened file on Windows, but currently
     this affect only files opened as binary.  [Feature #11218]
 
+* Thread
+  * Thread#name, Thread#name are added to handle thread names [Feature #11251]
+
 === Core classes compatibility issues (excluding feature bug fixes)
 
 * Array
@@ -55,9 +58,6 @@ with all sufficient information, see the ChangeLog file.
 * pack/unpack (Array/String)
   * j and J directives for pointer width integer type.  [Feature #11215]
 
-* Thread
-  * Thread#name, Thread#name are added to handle thread names [Feature #11251]
-
 
 === Stdlib updates (outstanding ones only)