The candidates running for the District 7 seat on the Boston City Council face off again this week, in a Roxbury forum on Wednesday night. Incumbent Chuck Turner and challenger Carlos Henriquez will both be at the Vine St. Community Center at 339 Dudley St. for a 6:30 p.m. forum. The forum is sponsored by the Vine St. Community Council, Think Politics, NAACP and the Urban League of Eastern Massachusetts. In our original posting, we incorrectly listed the event as happening on Tuesday night. Our apologies.