Update absolute same-site URLs on the Keeping Yourself Informed page.
This makes numerous link URLs at https://about.gitlab.com/handbook/marketing/product-marketing/getting-started/communication/ root-relative.
Related: !31234 (merged)
This makes numerous link URLs at https://about.gitlab.com/handbook/marketing/product-marketing/getting-started/communication/ root-relative.
Related: !31234 (merged)