Update zh_CN, thanks to walle

language/zh_CN/common.lang.php

@@ -101,7 +101,7 @@ $lang['User comments'] = '用户评论';
 $lang['Username'] = '用户名';
 $lang['Visits'] = '访问量';
 $lang['Webmaster'] = '站长';
-$lang['Week %d'] = '星期%d';
+$lang['Week %d'] = '第%d周';
 $lang['About Piwigo'] = '关于 Piwigo';
 $lang['You are not authorized to access the requested page'] = '您无权访问此页';
 $lang['add this photo to your favorites'] = '将图片添加到收藏';
@@ -445,4 +445,5 @@ $lang['Search in :'] = '搜索范围：';
 $lang['Search in this set'] = '在此集合中搜索';
 $lang['Tags found'] = '找到标签';
 $lang['Tags listed here match your search by word. Click on one to browse by tag.'] = '此处列出的标签与您的搜索匹配。单击其中一个可按标记浏览。';
-$lang['Unknown time period'] = '未知时间段';
+$lang['Unknown time period'] = '未知时间段';
+$lang['%d visits'] = '%d访问量';