rename tag

Signed-off-by: 21pages <pages21@163.com>

src/lang/cn.rs

@@ -526,5 +526,7 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Sort tags", "对标签进行排序"),
         ("Open connection in new tab", "在选项卡中打开新连接"),
         ("Move tab to new window", "将标签页移至新窗口"),
+        ("Can not be empty", "不能为空"),
+        ("Already exists", "已经存在"),
     ].iter().cloned().collect();
 }