This is an issue on https://golang.org/doc/tutorial/call-module-code, the last step.
I am running the current version of Go on my Windows 10 machine. I accidentally ran the Linux command, and I got the result you said I should. When I ran the Windows command, I got something completely different. I have no idea where that text came from.
Please update your tutorial.

This is an issue on https://golang.org/doc/tutorial/call-module-code, the last step.
I am running the current version of Go on my Windows 10 machine. I accidentally ran the Linux command, and I got the result you said I should. When I ran the Windows command, I got something completely different. I have no idea where that text came from.
Please update your tutorial.