https://codesearch.wmcloud.org/things/?q=en.wikipedia.org&files=&excludeFiles=tests%2F.*&repos=Extension%3AArticleFeedbackv5 still reveals a lot of uses. Since the extension is no longer used on enwiki and has instead acquired some remnant uses elsewhere those should be repointed to wherever "elsewhere" wants them to point.
In particular:
"articlefeedbackv5-help-transparency-terms": "Please post [//en.wikipedia.org/wiki/Wikipedia:Feedback_guidelines helpful feedback]. By posting, you agree to transparency under these [//foundation.wikimedia.org/wiki/Feedback_privacy_statement terms].", "articlefeedbackv5-help-transparency-terms-anon": "Please post [//en.wikipedia.org/wiki/Wikipedia:Feedback_guidelines helpful feedback]. By posting, you agree to be identified by your IP address, and to transparency under these [//foundation.wikimedia.org/wiki/Feedback_privacy_statement terms].",