Original sentence: Its nickname comes from the motorway between Sussex and south London.The Brighton–Crystal Palace rivalry, also nicknamed the M23 derby or A23 derby, is the derby between English football teams Brighton & Hove Albion and Crystal Palace
Edited sentence: The Brighton–Crystal Palace rivalry, also nicknamed the A23 derby and known erroneously as the M23 derby, is the derby between English football teams Brighton & Hove Albion and Crystal Palace.The latter nickname is thus a misnomer.The nicknames come from the A23 road and the M23 motorway and between Sussex and south London.While the A23 does connect Brighton to Croydon, where Crystal Palace's stadium is based, the M23 does not connect to either location, instead running between the A23 and Crawley