We are in the midst of a Judy Blume renaissance. Davina Pardo and Leah Wolchok’s documentary “Judy Blume Forever,” which had its premiere at this year’s Sundance Film Festival, debuted on Prime Video just last week. Arriving right on its heels is writer-director Kelly Fremon Craig’s film adaptation of Ms. Blume’s beloved novel “Are You There God? It’s Me, Margaret.” The circumstantial double feature has launched Ms. Blume herself into a flurry of publicity, complete with rounds on the late-night talk show circuit.