chore: 添加 Linux 构建标记到 gproc_z_signal_test.go

Author: hailaz

os/gproc/gproc_z_signal_test.go

@@ -4,6 +4,8 @@
 // If a copy of the MIT was not distributed with this file,
 // You can obtain one at https://github.com/gogf/gf.
 
+//go:build linux
+
 package gproc
 
 import (