No other interpretation makes sense. I read it as one *string* is reversed, which is correct for normal half-wave rectification. But if the intent really is half wave rectification, why have two strings?
The schematic does not agree at all with the verbal description and visual image of the circuit. For example, there is nothing on the schematic about a wire running through the center of the inductor.
Things are confusing because of his repeated incorrect use of the phrase "in parallel".
ak