painting motivations in search examples are unclear

[azaroth42]

https://iiif.io/api/search/2.0/#responses should use supplementing rather than painting to prevent confusion.

They're not technically wrong -- you can paint text just like you can paint images or anything else -- but normally this would be for transcriptions (and similar) which are supplementing in 3.0 rather than the undifferentiated painting in 2.x

Propose to update to supplementing in 2.1 / 3.0

From Emily Lynema in Slack on #search.