This changeset aims at fixing an old mistake by someone who wrote the name with a hyphen.

The authoritative source for street names in the Brussels Region is and has always been UrbIS.  We provide a link to UrbisAdm (it works out of the box in JOSM and iD) or the map can be viewed here: https://datastore.brussels/web/map

The official name for this long road has *no* hyphen.

The official source can only be invalidated if ground truth says otherwise.  As you can see here (https://www.mapillary.com/app/?pKey=360650995505294) the street signs indicate no hyphen in the name.  So, the official data and street signs say the same thing, and that is why we use this spelling in OSM.

Wikidata is *not* an authoritative source, it is primarily a secondary source… and there are at least two users who are actively copying OSM data to create Wikidata entry.  Had you inspected the history of the wikidata article, you would have easily found out it was much older, before this fix.