A way to suggest Archive.org metadata corrections

@dpk reports: It would be helpful if there was, "a way to correct metadata, or at least flag it as incorrect, from the search results page. Especially publication date and language, which is what’s most often wrong"

Start by reviewing the search results page and how metadata such as publication date and language is presented. Define what correction or flagging behavior is needed and how completion would be verified; the issue does not identify files, tests, or an implementation entry point.

Written by the indexing model from the issue text.