LOS ANGELES (AP) — Luka Doncic scored 21 of his 27 points in a dynamic second half, Kristaps Porzingis added 15 points and the Dallas Mavericks snapped the Los Angeles Lakers’ 10-game winning streak with a 114-100 victory Sunday. Doncic also had 10 assists and nine rebounds, and Delon Wright had 17 points and nine assists in the Mavericks’ seventh victory in eight games. Dallas underlined its…