add a ticket number [ci skip]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53280 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

NEWS

@@ -247,7 +247,7 @@ with all sufficient information, see the ChangeLog file or Redmine
     BasicSocket#sendmsg_nonblock all support `exception: false` to return
     :wait_readable or :wait_writable symbols instead of raising
     IO::WaitReadable or IO::WaitWritable exceptions
-    [Feature #11229]
+    [Feature #10532] [Feature #11229]
   * BasicSocket#recv and BasicSocket#recv_nonblock allow an output
     String buffer argument like IO#read and IO#read_nonblock to reduce
     GC overhead [Feature #11242]