Link to Firefox addon 404s #1134
Description
On https://testing-library.com/docs/queries/about#browser-extension, the link to the Firefox addon is a 404. I tried searching for the addon and couldn't find it, so I think the addon may be dead, but I'm not sure. Didn't want to directly create a PR to change because I'm not sure what the best edit would be (or if I just somehow missed the addon via search).