(Fixes spelling of Maldonado’s name in 2nd paragraph) By Lizbeth Diaz MEXICO CITY (Reuters) – A Mexican journalist was shot dead in the northern border city of Tijuana on Sunday, the state government said, becoming the second killed in the area within a week. Lourdes Maldonado, a journalist with decades of experience, was shot dead in her car in the Santa Fe neighborhood of Tijuana, the attorney general’s office of Baja California said in a statement. The killing came less than a week after officials reported that Mexican photojournalist Margarito Martinez, 49, died after being shot in the hea…