fix more modcomment

lang/chs/lang_shoutbox.php

@@ -10,6 +10,7 @@ $lang_shoutbox = array
 	'text_ago' => "前",
 	'text_helpbox_disabled' => "求助区当前关闭中。你在搞什么鬼？",
 	'text_no_permission_to_shoutbox' => "你没有在群聊区发言的权力。你在搞什么鬼？",
+    "speaking_too_often" => "不要刷屏!",
 );
 
 ?>

lang/cht/lang_shoutbox.php

@@ -10,6 +10,7 @@ $lang_shoutbox = array
 	'text_ago' => "前",
 	'text_helpbox_disabled' => "求助區當前關閉中。你在搞什麼鬼？",
 	'text_no_permission_to_shoutbox' => "你沒有在群聊區發言的權力。你在搞什麼鬼？",
+    "speaking_too_often" => "不要刷屏!",
 );
 
 ?>

lang/en/lang_shoutbox.php

@@ -10,6 +10,7 @@ $lang_shoutbox = array
 	'text_ago' => " ago",
 	'text_helpbox_disabled' => "Helpbox is currently disabled. How the hell do you get here?",
 	'text_no_permission_to_shoutbox' => "You have no permission to send messages to shoutbox. How the hell do you get here?",
+    "speaking_too_often" => "Speaking too often!",
 );
 
 ?>