John Updike (--on Fox's Doctor Golf): "Golf in the Kingdom" put me in mind of another curious devotional work, William Price Fox's "Doctor Golf."Doctor Golf, a fanatic even quainter and keener than Shivas Irons, runs a thirty-nine-member golf sanctuary in Arkansas called Eagle-Ho, refers to "young Hagen," advocates caddy flogging, sells by mail order a clanking, cumbersome line of golf paraphernalia, and conducts a large correspondence. When one correspondent writes,"I am in my 65th year and I have been seized by golflike a mouse in the claws of a golden eagle,"Doctor Golf congratulates him: