Interlanguage links to the Norwegian (bokmål) Wikipedia used to say "norsk bokmål" until a few days ago, when it was changed to "norsk". I susepct that it's this change that caused it: 0d82d154476b
There are two written standards for the Norwegian language: Bokmål and nynorsk. By naming the bokmål links as just "Norwegian", we imply that bokmål somehow is more proper Norwegian than nynorsk. The bokmål Wikipedia community disapproves of the change (see the Norsk og nynorsk (sic) thread at the bokmål Village Pump), we can also assume that the nynorsk Wikipedia community will disapprove.