Wrong cobra generator package address and document link

[taiojia]

Wrong package address

In the Install section, run go get -u github.com/spf13/cobra/cobra and got the error message:

go: downloading github.com/spf13/cobra v1.4.0
go: module github.com/spf13/cobra@upgrade found (v1.4.0), but does not contain package github.com/spf13/cobra/cobra

Wrong document link

In the Using the Cobra Generator section, click Here and got 404 error.