Use placeholder links in examples

[industrian]

Hi there, I noticed in the example usage for Link we use https://kanyetothe.com as an example:

A quick check of the repo also indicates this link is being used in some tests.

For best practices, it's advised to link to https://www.example.com/, as this domain was explicitly set up for such purposes. Failing that, it should be changed to a domain under our control, such as https://commercetools.com/