docs: update security disclosure email

Author: dwgx

SECURITY.md

@@ -9,7 +9,7 @@ Public issues are indexed by search engines and watched by forks — disclosing
 Instead, report privately via one of:
 
 - GitHub Security Advisories: <https://github.com/dwgx/WindsurfAPI/security/advisories/new> (preferred — encrypted, tracks the fix)
-- Email: `somdhmtb@gmail.com` with subject prefix `[WindsurfAPI Security]`
+- Email: `dwgx1337@gmail.com` with subject prefix `[WindsurfAPI Security]`
 
 Please include:
 
@@ -41,7 +41,7 @@ You can expect a first response within **72 hours**. Valid reports will be credi
 请用下面任一方式私下报告：
 
 - GitHub Security Advisories（推荐，加密、跟进修复）：<https://github.com/dwgx/WindsurfAPI/security/advisories/new>
-- 邮件：`somdhmtb@gmail.com`，标题前缀 `[WindsurfAPI Security]`
+- 邮件：`dwgx1337@gmail.com`，标题前缀 `[WindsurfAPI Security]`
 
 请附上：