Fail to execute the simple.go example.

[orange]

Summary

Fail to execute the simple.go example.

Additional details

When executing the https://github.com/wasmerio/wasmer-go/blob/master/examples/appendices/simple.go example, it prints :
no required module provides package github.com/wasmerio/wasmer-go/wasmer: go.mod file not found in current directory or any parent directory; see 'go help modules'