Wikipedia surely not wrong?

I don't remember this, but it's Cornwall Councill's entry in Wikipedia, and if it's in Wikipedia it must be true:

Name changes - On the creation of the new unitary authority it was decided that the name of the council would be changed from Cornwall County Council to Cornwall Council (Konsel Kernow). It has also been decided by the council to change the name of their meeting place from New County Hall to Lys Kernow (Cornwall Hall) so as to not use the term county

Someone should tell the council, whose website still insists on calling it County Hall.