Module path not following Go modules standard.

[HappyHacker123]

checkup uses Go modules and the current release version is v2.0.0. And it’s module path is "github.com/sourcegraph/checkup", instead of "github.com/sourcegraph/checkup/v2". It must comply with the specification of "Releasing Modules for v2 or higher" available in the Modules documentation. Quoting the specification:

A package that has opted in to modules must include the major version in the import path to import any v2+ modules.To preserve import compatibility, the go command requires that modules with major version v2 or later use a module path with that major version as the final element. For example, version v2.0.0 of example.com/m must instead use module path example.com/m/v2.