Technically, I just corrected the typo `building=shelterd_housing`, but found the linked proposal on the OSM Wiki, and thought it sounded appropriate.

There's 64 buildings worldwide with the tag (https://taginfo.openstreetmap.org/search?q=building%3Dsheltered) and 22 amenities with the tag (https://taginfo.openstreetmap.org/search?q=amenity%3Dsheltered), so it seems sensible to add the "proper". building tag back.
Do you want to do this, or shall I?