docs: fill DISABLE_ADD_FRIEND env var docs

website/docs/deployment/environment.md

@@ -26,6 +26,7 @@ title: Environment Variable
 | DISABLE_GUEST_LOGIN | - | Whether to disable the guest login, if "1" or "true" turn off this method |
 | DISABLE_CREATE_GROUP | - | Whether to disable user create group, if "1" or "true" turn off this method |
 | DISABLE_PLUGIN_STORE | - | Whether to hide user plugin store entry, if "1" or "true" turn off this method |
+| DISABLE_ADD_FRIEND | - | Whether to hide user add friend entry, if "1" or "true" turn off this method |
 
 > Some examples of environment variables can be seen: https://github.com/msgbyte/tailchat/blob/master/server/.env.example
 

website/i18n/zh-Hans/docusaurus-plugin-content-docs/current/deployment/environment.md

@@ -26,6 +26,7 @@ title: 环境变量
 | DISABLE_GUEST_LOGIN | - | 是否关闭用户游客登录功能, 如果为 "1" 或者 "true" 则关闭该功能 |
 | DISABLE_CREATE_GROUP | - | 是否关闭用户创建群组功能, 如果为 "1" 或者 "true" 则关闭该功能 |
 | DISABLE_PLUGIN_STORE | - | 是否隐藏用户插件中心功能, 如果为 "1" 或者 "true" 则关闭该功能 |
+| DISABLE_ADD_FRIEND | - | 是否隐藏用户添加好友功能, 如果为 "1" 或者 "true" 则关闭该功能 |
 
 > 部分环境变量示例可见: https://github.com/msgbyte/tailchat/blob/master/server/.env.example