Update the CLA signing introduction

content/en/developer.md

@@ -6,7 +6,7 @@ title = "Contributions to the Community"
 
 Before you start, please note that you must have a Gitee account. To register an account, go to [https://gitee.com/signup](https://gitee.com/signup).    
 
-We appreciate your contributions to the community. By signing a contributor license agreement (CLA), we ensure that the community is free to use your contributions. The signing link is [https://openeuler.org/en/cla.html](https://openeuler.org/en/cla.html).      
+We appreciate your contributions to the community. By signing a contributor license agreement (CLA), we ensure that the community is free to use your contributions. The signing link is [https://openeuler.org/en/cla.html](https://openeuler.org/en/cla.html). Gitee authentication is required when signing CLA.      
 
 Select a project you may be interested in from the project catalog at [https://gitee.com/openeuler](https://gitee.com/openeuler)-Code Sources, [https://gitee.com/src-openeuler](https://gitee.com/src-openeuler)-Package Sources. Read the ```CONTRIBUTING.md``` file for project information and contribution instructions.  If you are not sure which project is suitable for you, refer to the introduction of the [SIGs](./sig.html) in the community.    
 

content/zh/developer.md

@@ -8,7 +8,7 @@ title = "社区贡献"
 
 签署社区CLA。签署地址：[https://openeuler.org/zh/cla.html](https://openeuler.org/zh/cla.html)，根据情况选择**个人独立贡献者**或者**法律实体贡献者**签署。       
 
-选择贡献项目，所有项目参见：代码仓组织-[https://gitee.com/openeuler](https://gitee.com/openeuler), 软件包组织-[https://gitee.com/src-openeuler](https://gitee.com/src-openeuler)。 阅读项目下 ```CONTRIBUTING.md``` 文件了解该项目贡献指导。 如果您不确定哪个项目适合您，建议参考社区 [SIG](./sig.html)组介绍。    
+选择贡献项目，所有项目参见：代码仓组织-[https://gitee.com/openeuler](https://gitee.com/openeuler), 软件包组织-[https://gitee.com/src-openeuler](https://gitee.com/src-openeuler)。 阅读项目下 ```CONTRIBUTING.md``` 文件了解该项目贡献指导。 如果您不确定哪个项目适合您，建议参考社区 [SIG](./sig.html)组介绍。签署CLA必须要登录gitee。    
 
 了解项目的编码规范。了解项目编码规范就有助于您的提交快速接纳，在每个项目里有关于该项目的编码规范介绍，文件名为```code-of-conduct.md```，位于项目根目录下，如果项目下未提供，请参考社区编码规范，地址：[https://gitee.com/openeuler/community/blob/master/code-of-conduct.md](https://gitee.com/openeuler/community/blob/master/code-of-conduct.md)。<br>