Make gVisor optional

docs/configuration/outbound/wireguard.md

@@ -26,6 +26,10 @@
 
     WireGuard is not included by default, see [Installation](/#installation).
 
+!!! warning ""
+
+    gVisor, which is required by the unprivileged WireGuard is not included by default, see [Installation](/#installation).
+
 ### Fields
 
 #### server
@@ -44,7 +48,9 @@ The server port.
 
 Use system tun support.
 
-Requires privileges and cannot conflict with system interfaces.
+Requires privilege and cannot conflict with system interfaces.
+
+Forced if gVisor not included in the build.
 
 #### interface_name
 

docs/configuration/outbound/wireguard.zh.md

@@ -26,6 +26,10 @@
 
     默认安装不包含 WireGuard, 参阅 [安装](/zh/#_2)。
 
+!!! warning ""
+
+    默认安装不包含被非特权 WireGuard 需要的 gVisor, 参阅 [安装](/zh/#_2)。
+
 ### 字段
 
 #### server
@@ -46,6 +50,8 @@
 
 需要特权且不能与系统接口冲突。
 
+如果 gVisor 未包含在构建中，则强制执行。
+
 #### interface_name
 
 启用 `system_interface` 时的自定义设备名称。