In producing The Hidden World of Girls, the new documentary specials offered during NPR newsmags this month, producers Davia Nelson and Nikki Silva — the Kitchen Sisters — didn’t limit themselves to following the lives of five girls, as indicated erroneously in a Current brief Oct. 3. Comic writer/performer Tina Fey hosts the specials, which expand on dozens of stories “about the lives of girls all around the world and the women they become.”