Update Link component `border-radius`

[GomezIvann]

For consistency purposes, the border-radius of the Link component is 2px and we want to update it to 4px. This is its value in most of our components. So, the tasks here are:

• Update the component implementation.
• Update the specifications, both images and possible token values.

[github-actions]

This issue is stale because it has been open for 15 days with no activity. If there are no further updates or modifications within the next 15 days, it will be automatically closed.

[lcordobapuerto]

From the design perspective, we validated this request and, as Ivan said, the link component should follow the same rules for border-radius we're applying in the rest of our components.