update doc

README.cn.md

@@ -172,7 +172,9 @@ Enjoy!
 
 ## 常见问题
 ### 4个卡片按钮不显示
-这个问题的唯一原因，是你没有使用最新版SD webui。  
+首先，确保你点过了"Refresh Civitai Helper"刷新按钮。  
+
+然后，如果还有这个问题，那么唯一原因，是你没有使用最新版SD webui。  
 
 如果你修改过SD webui的文件， 你的更新操作可能会失败。你需要检查git命令行的输出信息，来确定你更新成功了。   
 

README.md

@@ -174,7 +174,9 @@ Enjoy!
 
 ## Common Issue
 ### 4 Button on card didn't show
-The only reason for this issue, is you are not using the latest SD webui. So, Make sure you updated it.  
+First of all, make sure you clicked "Refresh Civitai Helper" button.  
+
+If issue is still there, then, only reason is you are not using the latest SD webui. So, Make sure you updated it.  
 
 Your update could be failed if you have modified SD webui's file. You need to check git command's console log to make sure it is updated.