如何使用godoc正确生成文档？

Question

这是我的代码和终端窗口。我应该怎么做才能使其正常工作并返回功能说明？

// Copyright DOCUMENTATION FOR ME. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package testDoc

// sayHello return "Hello world string"
func sayHello() string{
    return "Hello world!"
}

terminal return

Answer 1

使用-u标志显示unexported符号：go doc -u ./test