Broken and soon to be discontiued short links (goo.gl)

[AdrianAulbach]

Describe the bug

There are short links using googles url shortener goo.gl in the documentation as well as in build output that point to pages that have been moved. Users following the short link must manually click to go to the new page and copy the anchor from the page before to get to the right section.
Google will be discontinuing the goo.gl service anyways (https://www.cnet.com/tech/services-and-software/google-link-shortener-service-ends-firebase-dynamic-links-googl/) so those links should be replaced anyways which is easier while they can still be followed. So even the ones still working should be replaced.

Which terms did you search for in User Guide?

Searching the repository for all occruences of "goo.gl"

Expected behavior

Clicking link (eg. https://goo.gl/LeUzfb) leads to desired ressource

Actual behavior

• Currently: Clicking link leads to Markdown file pointing to the file where the originally linked file has been moved to
• Soon: Clicking link leads nowhere or to a google error page

Proposed fix

I suggest to replace them with direct links and could supply a PR to do so.
But in the past there were also discussions about other shortening solutions, eg in #5910 netlify-shortener was suggested, but it doesn't seem a decision was ever made.

If no other solution is preferred, I''ll supply a PR with the replaced links.