Turns out, Allyson Felix hasn’t run her last race. The most decorated sprinter in US history will return to the world championships to race in the preliminaries of the women’s 4×400 relay Saturday. She said team officials coaxed her out of her brief retirement after she helped the mixed relay team win a bronze medal last Friday in what she had said was her last major race. “The coaches asked if I was available and there was no way I’d turn the team down,” the 36-year-old said through an email with The Associated Press. The prelims of the 4×400 relay are Saturday and the final will be held Sund…