CHICAGO — The Tigers’ six-game winning streak was halted abruptly Saturday, almost as quickly as Gregory Soto buzzed all the hair off coach Ramon Santiago’s head the night before. Santiago paid up on his pledge to shave his head if the Tigers won six straight games. Soto sat him in a chair Friday night and held him to his word. It was the White Sox’s turn to have fun Saturday, beating the Tigers, 8-0, at Guaranteed Rate Field. They took the drama out of this one early, scoring six runs in the first two innings against rookie right-hander Garrett Hill, all with two outs. Gavin Sheets, with two …