Photo: Keith Urban, Nicole Kidman / Instagram Keith Urban returned to the stage in Hershey, Pennsylvania on Oct. 2, marking his first concert since Nicole Kidman filed for divorce after 19 years of marriage. One surprise of the night was the absence of guitarist Maggie Baugh, who has been in the spotlight since Urban changed a lyric to include her name during a September show. Us Weekly reported Baugh was not present, though it’s unclear if she was scheduled to perform. At the Pennsylvania concert, Urban skipped “The Fighter,” the song at the center of the lyric change. Photo: Nicole Kidman, Keith Urban / Instagram During his set, Urban played “Heart Like a Hometown” while a slideshow of personal photos appeared, including a shot of Kidman and their two daughters. He also shared a story about his parents supporting his dream of becoming a musician. The singer, without his wedding ring, stayed upbeat by even FaceTiming a fan’s friend during “Kiss a G...