chore: Autogenerated pages should have a low priority in search results

[fedgiac]

Background

When I do a search in docs.cow.fi, often the first results are from less helpful autogenerated pages instead of more tailored pages.
For example, when I search "appdata" the first result is this, the other four are even worse, and then the user would have to sift through all 430 results for the helpful one.

Details

By @mfw78: this can likely be done within agolia (the search agent that's used).

Acceptance criteria

• This page (or something of similar quality) surfaces first when searching for "appdata" .