Fix links in security policy (#41796)

SECURITY.md

@@ -55,4 +55,4 @@ If malicious input can trigger memory corruption or non-clean exit, such bug is
 
 
 
-[security advisories](https://github.com/PaddlePaddle/Paddle/security/README.md)
+[security advisories](https://github.com/PaddlePaddle/Paddle/blob/develop/security/README.md)

SECURITY_cn.md

@@ -41,4 +41,4 @@
 
 如果输入非预期的参数后，对飞桨代码造成了内存破坏，或者非干净退出，这类行为被认定为存在安全问题。
 
-### [安全公告](https://github.com/PaddlePaddle/Paddle/security/README_cn.md)
+### [安全公告](https://github.com/PaddlePaddle/Paddle/blob/develop/security/README_cn.md)

security/README.md

@@ -4,7 +4,7 @@ We regularly publish security advisories about using PaddlePaddle.
 
 
 
-*Note*: In conjunction with these security advisories, we strongly encourage PaddlePaddle users to read and understand PaddlePaddle's security model as outlined in [SECURITY.md](https://github.com/PaddlePaddle/Paddle/SECURITY.md).
+*Note*: In conjunction with these security advisories, we strongly encourage PaddlePaddle users to read and understand PaddlePaddle's security model as outlined in [SECURITY.md](https://github.com/PaddlePaddle/Paddle/blob/develop/SECURITY.md).
 
 
 | Advisory Number | Type | Versions affected | Reported by | Additional Information|

security/README_cn.md

@@ -4,7 +4,7 @@
 
 
 
-注：我们非常建议飞桨用户阅读和理解[SECURITY_cn.md](https://github.com/PaddlePaddle/Paddle/SECURITY_cn.md)所介绍的飞桨安全模型，以便更好地了解此安全公告。
+注：我们非常建议飞桨用户阅读和理解[SECURITY_cn.md](https://github.com/PaddlePaddle/Paddle/blob/develop/SECURITY_cn.md)所介绍的飞桨安全模型，以便更好地了解此安全公告。
 
 
 | 安全公告编号 | 类型 | 受影响版本 | 报告者 | 备注 |