After having "add a link" on about 10 wikis for several months, we learned about valuable improvements to make. Those improvements are collected in this epic: T300851: [EPIC] Growth: "add a link" structured task 2.0. Once those improvements are complete, we will be comfortable deploying "add a link" more broadly. This task is about generating the suggestions for another set of wikis and deploying there.
This process was started in T290011: [OLD] Deploy Add a link to a third round of wikis, which is kept under this task for reference.